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Journal articles on the topic 'Ultrafast spintronics'

Author: Grafiati

Published: 8 June 2024

Last updated: 31 July 2025

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1

Polley, Debanjan, Akshay Pattabi, Jyotirmoy Chatterjee, et al. "Progress toward picosecond on-chip magnetic memory." Applied Physics Letters 120, no. 14 (2022): 140501. http://dx.doi.org/10.1063/5.0083897.

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We offer a perspective on the prospects of ultrafast spintronics and opto-magnetism as a pathway to high-performance, energy-efficient, and non-volatile embedded memory in digital integrated circuit applications. Conventional spintronic devices, such as spin-transfer-torque magnetic-resistive random-access memory (STT-MRAM) and spin–orbit torque MRAM, are promising due to their non-volatility, energy-efficiency, and high endurance. STT-MRAMs are now entering into the commercial market; however, they are limited in write speed to the nanosecond timescale. Improvement in the write speed of spint

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2

Seifert, Tom S., Liang Cheng, Zhengxing Wei, Tobias Kampfrath, and Jingbo Qi. "Spintronic sources of ultrashort terahertz electromagnetic pulses." Applied Physics Letters 120, no. 18 (2022): 180401. http://dx.doi.org/10.1063/5.0080357.

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Spintronic terahertz emitters are broadband and efficient sources of terahertz radiation, which emerged at the intersection of ultrafast spintronics and terahertz photonics. They are based on efficient spin-current generation, spin-to-charge-current conversion, and current-to-field conversion at terahertz rates. In this Editorial, we review the recent developments and applications, the current understanding of the physical processes, and the future challenges and perspectives of broadband spintronic terahertz emitters.

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3

El-Ghazaly, Amal, Jon Gorchon, Richard B. Wilson, Akshay Pattabi, and Jeffrey Bokor. "Progress towards ultrafast spintronics applications." Journal of Magnetism and Magnetic Materials 502 (May 2020): 166478. http://dx.doi.org/10.1016/j.jmmm.2020.166478.

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4

Afanasiev, Dmytro, and Alexey V. Kimel. "Ultrafast push for counterintuitive spintronics." Nature Materials 22, no. 6 (2023): 673–74. http://dx.doi.org/10.1038/s41563-023-01554-9.

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5

Walowski, Jakob, and Markus Münzenberg. "Perspective: Ultrafast magnetism and THz spintronics." Journal of Applied Physics 120, no. 14 (2016): 140901. http://dx.doi.org/10.1063/1.4958846.

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6

Dikshit, Surya Narain, Arshid Nisar, Brahmdutta Dixit, et al. "Optically assisted ultrafast spintronics: A review." Physics Reports 1140 (October 2025): 1–46. https://doi.org/10.1016/j.physrep.2025.07.002.

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7

Ivanov, B. A. "Spin Dynamics for Antiferromagnets and Ultrafast Spintronics." Journal of Experimental and Theoretical Physics 131, no. 1 (2020): 95–112. http://dx.doi.org/10.1134/s1063776120070079.

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8

Zhang, Yue, Xueqiang Feng, Zhenyi Zheng, et al. "Ferrimagnets for spintronic devices: From materials to applications." Applied Physics Reviews 10, no. 1 (2023): 011301. http://dx.doi.org/10.1063/5.0104618.

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Spintronic devices use spin instead of charge to process information and are widely considered as promising candidates for next-generation electronic devices. In past decades, the main motivation in spintronics has been to discover new mechanisms and novel material systems to improve both device performance and the application prospects of spintronics. Recently, researchers have found that ferrimagnetic materials—in which sublattices are coupled antiferromagnetically—offer an emerging platform for realizing high-density, high-speed, and low-power-consumption memory and logic functions. Within

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Matsubara, Masakazu. "Ultrafast Optical Control of Magnetic Interactions in Carrier-Density-Controlled Ferromagnetic Semiconductors." Applied Sciences 9, no. 5 (2019): 948. http://dx.doi.org/10.3390/app9050948.

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Investigation of the interaction of ultrashort laser pulses with magnetically ordered materials has become a fascinating research topic in modern magnetism. Especially, the control of magnetic order by sub-ps laser pulses has become a fundamentally important topic with a high potential for future spintronics applications. This paper will review the recent success in optically controlling the magnetic interactions in carrier-density-controlled ferromagnetic semiconductor EuO doped with Gd ions. When the Gd concentration is low, the magnitude of the magnetic interaction is enhanced by the irradi

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10

Telegin, Andrei, and Yurii Sukhorukov. "Magnetic Semiconductors as Materials for Spintronics." Magnetochemistry 8, no. 12 (2022): 173. http://dx.doi.org/10.3390/magnetochemistry8120173.

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From the various aspects of spintronics the review highlights the area devoted to the creation of new functional materials based on magnetic semiconductors and demonstrates both the main physical phenomena involved and the technical possibilities of creating various devices: maser, p-n diode with colossal magnetoresistance, spin valve, magnetic lens, optical modulators, spin wave amplifier, etc. Particular attention is paid to promising research directions such as ultrafast spin transport and THz spectroscopy of magnetic semiconductors. Special care has been taken to include a brief theoretica

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11

Mashkovich, Evgeny A., Kirill A. Grishunin, Roman M. Dubrovin, Anatoly K. Zvezdin, Roman V. Pisarev, and Alexey V. Kimel. "Terahertz light–driven coupling of antiferromagnetic spins to lattice." Science 374, no. 6575 (2021): 1608–11. http://dx.doi.org/10.1126/science.abk1121.

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Coupling up of spins and lattice The development of spintronics and magnetic data storage relies on understanding and controlling the dynamics of magnetic excitations within a material. Of crucial importance for practical applications is how fast the magnetization can be switched. Mashkovich et al . report the use of ultrafast terahertz radiation to create magnon excitations in the antiferromagnet cobalt difluoride that can then be coupled with phonon excitations (see the Perspective by Juraschek and Narang). Using light to control coupling between the spins and the lattice provides a route to

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12

Oka, Takashi, and Sota Kitamura. "Floquet Engineering of Quantum Materials." Annual Review of Condensed Matter Physics 10, no. 1 (2019): 387–408. http://dx.doi.org/10.1146/annurev-conmatphys-031218-013423.

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Floquet engineering, the control of quantum systems using periodic driving, is an old concept in condensed matter physics dating back to ideas such as the inverse Faraday effect. However, there is a renewed interest in this concept owing to ( a) the rapid developments in laser and ultrafast spectroscopy techniques, ( b) discovery and understanding of various “quantum materials” hosting interesting exotic quantum properties, and ( c) communication with different areas of physics such as artificial matter and nonequilibrium quantum statistical physics. Here, starting from a nontechnical introduc

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13

Chen, Yequan, Zhendong Chen, Wenxuan Sun, et al. "Observation of an anisotropic ultrafast spin relaxation process in large-area WTe₂ films." Journal of Applied Physics 131, no. 16 (2022): 163903. http://dx.doi.org/10.1063/5.0090935.

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Weyl semimetal Td-WTe2 hosts the natural broken inversion symmetry and strong spin–orbit coupling, which contains profound spin-related physics within a picosecond timescale. However, the comprehensive understanding of ultrafast spin behaviors in WTe2 is lacking due to its limited quality of large-scale films. Here, we report on an anisotropic ultrafast spin dynamics in highly oriented Td-WTe2 films using a femtosecond pump–probe technique at room temperature. A transient spin polarization-flip transition as fast as 0.8 ps is observed upon photoexcitation. The inversed spin is subsequently sca

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14

Patrick, Chris. "Femtosecond spin voltage measurement helps pull spintronics into the ultrafast domain." Scilight 2020, no. 45 (2020): 451115. http://dx.doi.org/10.1063/10.0002654.

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15

Tengdin, Phoebe, Christian Gentry, Adam Blonsky, et al. "Direct light–induced spin transfer between different elements in a spintronic Heusler material via femtosecond laser excitation." Science Advances 6, no. 3 (2020): eaaz1100. http://dx.doi.org/10.1126/sciadv.aaz1100.

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Heusler compounds are exciting materials for future spintronics applications because they display a wide range of tunable electronic and magnetic interactions. Here, we use a femtosecond laser to directly transfer spin polarization from one element to another in a half-metallic Heusler material, Co2MnGe. This spin transfer initiates as soon as light is incident on the material, demonstrating spatial transfer of angular momentum between neighboring atomic sites on time scales < 10 fs. Using ultrafast high harmonic pulses to simultaneously and independently probe the magnetic state of two ele

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Kim, Jonghwan, Xiaoping Hong, Chenhao Jin, et al. "Ultrafast generation of pseudo-magnetic field for valley excitons in WSe2monolayers." Science 346, no. 6214 (2014): 1205–8. http://dx.doi.org/10.1126/science.1258122.

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The valley pseudospin is a degree of freedom that emerges in atomically thin two-dimensional transition metal dichalcogenides (MX2). The capability to manipulate it, in analogy to the control of spin in spintronics, can open up exciting opportunities. Here, we demonstrate that an ultrafast and ultrahigh valley pseudo-magnetic field can be generated by using circularly polarized femtosecond pulses to selectively control the valley degree of freedom in monolayer MX2.Using ultrafast pump-probe spectroscopy, we observed a pure and valley-selective optical Stark effect in WSe2monolayers from the no

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17

Zhang, G. P., Y. H. Bai, and Thomas F. George. "Spin Berry points as crucial for ultrafast demagnetization." Modern Physics Letters B 35, no. 13 (2021): 2150215. http://dx.doi.org/10.1142/s0217984921502158.

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Laser-induced ultrafast demagnetization has puzzled researchers around the world for over two decades. Intrinsic complexity in electronic, magnetic and phononic subsystems is difficult to understand microscopically. So far, it is not possible to explain demagnetization using a single mechanism, which suggests a crucial piece of information still missing. In this paper, we return to a fundamental aspect of physics: spin and its change within each band in the entire Brillouin zone. We employ face-centered cubic (fcc) Ni as an example and use an extremely dense k mesh to map out spin changes for

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Lu Wen-Tian, Yao Chun-Wei, YAN Zhi, and YUAN Zhe. "Ultrafast Spin Dynamics Research on Laser-Induced Spin Valve Structures." Acta Physica Sinica 74, no. 6 (2025): 0. https://doi.org/10.7498/aps.74.20241744.

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The discovery of ultrafast demagnetization has introduced a new approach for generating ultrafast spin currents using an ultrashort laser, potentially enabling faster manipulation of material magnetism. This has sparked research into the transport mechanisms of ultrafast spin currents. However, the underlying processes remain poorly understood, particularly the factors influencing interlayer spin transfer. This study employs a superdiffusive spin transport model to investigate the ultrafast spin transport mechanisms in the Ni/Ru/Fe spin valve system, with a particular focus on how interlayer s

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19

Ito, Keita, Syuta Honda, and Takashi Suemasu. "Transition metal nitrides and their mixed crystals for spintronics." Nanotechnology 33, no. 6 (2021): 062001. http://dx.doi.org/10.1088/1361-6528/ac2fe4.

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Abstract Anti-perovskite transition metal nitrides exhibit a variety of magnetic properties—such as ferromagnetic, ferrimagnetic, and paramagnetic—depending on the 3d transition metal. Fe4N and Co4N are ferromagnetic at room temperature (RT), and the minority spins play a dominant role in the electrical transport properties. However, Mn4N is ferrimagnetic at RT and exhibits a perpendicular magnetic anisotropy caused by tensile strain. Around the magnetic compensation in Mn4N induced by impurity doping, researchers have demonstrated ultrafast current-induced domain wall motion reaching 3000 m s

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20

Arslan, M., C. Bese, Z. Tabak, T. Bozdag, E. Duman, and H. G. Yaglioglu. "Experimental observation of transition from type I to type II ultrafast demagnetization dynamics in chemically disordered Fe₆₀Al₄₀ thin film, driven by laser fluence." Journal of Applied Physics 131, no. 9 (2022): 093904. http://dx.doi.org/10.1063/5.0073069.

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Understanding of the laser-induced ultrafast demagnetization dynamics is one of the most challenging and hot topics in magnetism research due to its potential applications in magnetic storage devices and the field of spintronics. Recently, a laser-induced switching of ferromagnetism, driven by a disorder–order transition on FeAl thin films, has been experimentally demonstrated. The switching of ferromagnetic ordering by ultrafast laser pulses in FeAl thin films may open new possible applications of this material such as magnetic data storage and manipulation. Since the speed of the magnetic sw

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21

Agarwal, Rekha, Sandeep Kumar, Niru Chowdhury, et al. "Strong impact of crystalline twins on the amplitude and azimuthal dependence of THz emission from epitaxial NiO/Pt." Applied Physics Letters 122, no. 8 (2023): 082403. http://dx.doi.org/10.1063/5.0138949.

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Ultrafast generation of spin currents involving antiferromagnets is currently attracting tremendous interest. Here, we demonstrate broadband THz emission from a [111]-oriented NiO/Pt bilayer grown on MgO and Al2O3 substrates. The NiO films are grown by pulsed laser deposition, whereas the Pt films are grown by magnetron sputtering. While we obtained epitaxial films on both substrates, NiO films on the Al2O3 substrate showed the presence of crystalline twins. We show that the existence of crystalline twins reduces the THz amplitude by an order of magnitude while simultaneously dramatically chan

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22

Ivanov, B. A. "Ultrafast spin dynamics and spintronics for ferrimagnets close to the spin compensation point (Review)." Low Temperature Physics 45, no. 9 (2019): 935–63. http://dx.doi.org/10.1063/1.5121265.

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23

Buryakov, Arseniy, Pavel Avdeev, Dinar Khusyainov, et al. "The Role of Ferromagnetic Layer Thickness and Substrate Material in Spintronic Emitters." Nanomaterials 13, no. 11 (2023): 1710. http://dx.doi.org/10.3390/nano13111710.

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In this article, we investigate optically induced terahertz radiation in ferromagnetic FeCo layers of varying thickness on Si and SiO2 substrates. Efforts have been made to account for the influence of the substrate on the parameters of the THz radiation generated by the ferromagnetic FeCo film. The study reveals that the thickness of the ferromagnetic layer and the material of the substrate significantly affect the generation efficiency and spectral characteristics of the THz radiation. Our results also emphasize the importance of accounting for the reflection and transmission coefficients of

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24

Chen, Xianzhe, Tomoya Higo, Katsuhiro Tanaka, et al. "Octupole-driven magnetoresistance in an antiferromagnetic tunnel junction." Nature 613, no. 7944 (2023): 490–95. http://dx.doi.org/10.1038/s41586-022-05463-w.

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AbstractThe tunnelling electric current passing through a magnetic tunnel junction (MTJ) is strongly dependent on the relative orientation of magnetizations in ferromagnetic electrodes sandwiching an insulating barrier, rendering efficient readout of spintronics devices1–5. Thus, tunnelling magnetoresistance (TMR) is considered to be proportional to spin polarization at the interface1 and, to date, has been studied primarily in ferromagnets. Here we report observation of TMR in an all-antiferromagnetic tunnel junction consisting of Mn3Sn/MgO/Mn3Sn (ref. 6). We measured a TMR ratio of around 2%

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Rey-de-Castro, R., D. Wang, A. Verevkin, A. Mycielski, and R. Sobolewski. "<tex>$hboxCd_1-xhboxMn_xhboxTe$</tex>Semimagnetic Semiconductors for Ultrafast Spintronics and Magnetooptics." IEEE Transactions On Nanotechnology 4, no. 1 (2005): 106–12. http://dx.doi.org/10.1109/tnano.2004.840164.

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26

Whitaker, Kelly M., Maxim Raskin, Gillian Kiliani, et al. "Spin-on Spintronics: Ultrafast Electron Spin Dynamics in ZnO and Zn1–xCoxO Sol–Gel Films." Nano Letters 11, no. 8 (2011): 3355–60. http://dx.doi.org/10.1021/nl201736p.

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27

Bowen, Martin, and Christian Back. "Eric Beaurepaire a pioneer of ultrafast magnetism and organic spintronics passed away on April 24, 2018." Journal of Magnetism and Magnetic Materials 478 (May 2019): 279–80. http://dx.doi.org/10.1016/j.jmmm.2018.11.064.

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28

Luo, Jiaming, Tong Lin, Junjie Zhang, et al. "Large effective magnetic fields from chiral phonons in rare-earth halides." Science 382, no. 6671 (2023): 698–702. http://dx.doi.org/10.1126/science.adi9601.

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Time-reversal symmetry (TRS) is pivotal for materials’ optical, magnetic, topological, and transport properties. Chiral phonons, characterized by atoms rotating unidirectionally around their equilibrium positions, generate dynamic lattice structures that break TRS. Here, we report that coherent chiral phonons, driven by circularly polarized terahertz light pulses, polarize the paramagnetic spins in cerium fluoride in a manner similar to that of a quasi-static magnetic field on the order of 1 tesla. Through time-resolved Faraday rotation and Kerr ellipticity, we found that the transient magneti

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Ogawa, Naoki, Wataru Koshibae, Aron Jonathan Beekman, et al. "Photodrive of magnetic bubbles via magnetoelastic waves." Proceedings of the National Academy of Sciences 112, no. 29 (2015): 8977–81. http://dx.doi.org/10.1073/pnas.1504064112.

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Precise control of magnetic domain walls continues to be a central topic in the field of spintronics to boost infotech, logic, and memory applications. One way is to drive the domain wall by current in metals. In insulators, the incoherent flow of phonons and magnons induced by the temperature gradient can carry the spins, i.e., spin Seebeck effect, but the spatial and time dependence is difficult to control. Here, we report that coherent phonons hybridized with spin waves, magnetoelastic waves, can drive magnetic bubble domains, or curved domain walls, in an iron garnet, which are excited by

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Zhang, Guangfu, Ye Tian, Yangbao Deng, Dongchu Jiang, and Shuguang Deng. "Spin-Wave-Driven Skyrmion Motion in Magnetic Nanostrip." Journal of Nanotechnology 2018 (2018): 1–5. http://dx.doi.org/10.1155/2018/2602913.

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The photon-assisted magnetic recording utilizes the ultrafast laser to excite the spin wave in the magnetic nanostructures and accordingly switch its magnetization state. Here, by means of micromagnetic simulation, the motion of magnetic skyrmions, a topologically protected chiral magnet with few nanometer size, induced by the spin wave is studied. It is found that the magnetic skyrmion can move in the same direction of spin-wave propagation, which is first accelerated and then decelerated exponentially. The magnetic skyrmion motion originated from the robust coupling of the spin waves with th

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Nan, Tianxiang, Yeonbae Lee, Shihao Zhuang, et al. "Electric-field control of spin dynamics during magnetic phase transitions." Science Advances 6, no. 40 (2020): eabd2613. http://dx.doi.org/10.1126/sciadv.abd2613.

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Controlling magnetization dynamics is imperative for developing ultrafast spintronics and tunable microwave devices. However, the previous research has demonstrated limited electric-field modulation of the effective magnetic damping, a parameter that governs the magnetization dynamics. Here, we propose an approach to manipulate the damping by using the large damping enhancement induced by the two-magnon scattering and a nonlocal spin relaxation process in which spin currents are resonantly transported from antiferromagnetic domains to ferromagnetic matrix in a mixed-phased metallic alloy FeRh.

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Papaioannou, Evangelos Th, and René Beigang. "THz spintronic emitters: a review on achievements and future challenges." Nanophotonics, December 18, 2020. http://dx.doi.org/10.1515/nanoph-2020-0563.

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AbstractThe field of THz spintronics is a novel direction in the research field of nanomagnetism and spintronics that combines magnetism with optical physics and ultrafast photonics. The experimental scheme of the field involves the use of femtosecond laser pulses to trigger ultrafast spin and charge dynamics in thin films composed of ferromagnetic and nonmagnetic thin layers, where the nonmagnetic layer features a strong spin–orbit coupling. The technological and scientific key challenges of THz spintronic emitters are to increase their intensity and to shape the frequency bandwidth. To achie

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Kampfrath, Tobias, Andrei Kirilyuk, Stéphane Mangin, Sangeeta Sharma, and Martin Weinelt. "Ultrafast and terahertz spintronics: Guest editorial." Applied Physics Letters 123, no. 5 (2023). http://dx.doi.org/10.1063/5.0167151.

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Spin-based electronics (spintronics) aims at extending electronic functionalities, which rely on the electron charge as information carrier, by the spin of the electron. To make spintronics competitive and compatible with other information carriers like photons and electrons, their speed needs to be pushed to femtosecond time scales and, thus, terahertz frequencies. In ultrafast and terahertz spintronics, femtosecond optical and terahertz electromagnetic pulses are used to induce spin torque and spin transport and to monitor the subsequent time evolution. The two approaches, sometimes referred

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Tong, Junwei, Peng Wang, Hongsong Qiu, et al. "Efficient terahertz spin-to-charge current conversion in IrAl compounds." Applied Physics Letters 126, no. 26 (2025). https://doi.org/10.1063/5.0272921.

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The interconversion between spin and charge currents is vital for developing spintronics technologies, which require materials with high spin-to-charge-current conversion efficiency (SCC). The alloy IrAl was shown to exhibit a large spin Hall angle at gigahertz frequencies. Here, we use spintronic terahertz emission spectroscopy to investigate terahertz SCC in IrxAl1−x|FM heterostructures with a ferromagnetic layer FM of CoFeB and Ni as a function of the composition ratio x. We observe a strongly x-dependent terahertz-signal amplitude, whereas no change in the dynamics of the ultrafast in-plan

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Tzschaschel, Christian, Takuya Satoh, and Manfred Fiebig. "Efficient spin excitation via ultrafast damping-like torques in antiferromagnets." Nature Communications 11, no. 1 (2020). http://dx.doi.org/10.1038/s41467-020-19749-y.

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AbstractDamping effects form the core of many emerging concepts for high-speed spintronic applications. Important characteristics such as device switching times and magnetic domain-wall velocities depend critically on the damping rate. While the implications of spin damping for relaxation processes are intensively studied, damping effects during impulsive spin excitations are assumed to be negligible because of the shortness of the excitation process. Herein we show that, unlike in ferromagnets, ultrafast damping plays a crucial role in antiferromagnets because of their strongly elliptical spi

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Joy, Ajin, Sreyas Satheesh, and P. S. Anil Kumar. "Extremely energy-efficient, magnetic field-free, skyrmion-based memristors for neuromorphic computing." Applied Physics Letters 123, no. 21 (2023). http://dx.doi.org/10.1063/5.0177232.

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The human brain can process information more efficiently than computers due to the dynamics of neurons and synapses. Mimicking such a system can lead to the practical implementation of artificial spiking neural networks. Spintronic devices have been shown to be an ideal solution for realizing the hardware required for neuromorphic computing. Skyrmions prove to be an effective candidate as information carriers owing to their topological protection and particle-like nature. Ferrimagnet and antiferromagnet-based spintronics have been employed previously to obtain an ultrafast simulation of artifi

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Wang, Luding, Houyi Cheng, Pingzhi Li, et al. "Picosecond optospintronic tunnel junctions." Proceedings of the National Academy of Sciences 119, no. 24 (2022). http://dx.doi.org/10.1073/pnas.2204732119.

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Significance Spintronic devices have become promising candidates for next-generation memory architecture. However, state-of-the-art devices, such as perpendicular magnetic tunnel junctions (MTJs), are still fundamentally constrained by a subnanosecond speed limitation, which has remained a long-lasting scientific obstacle in the ultrafast spintronics field. The highlight of our work is the demonstration of an optospintronic tunnel junction, an all-optical MTJ device which emerges as a new category of integrated photonic–spintronic memory. We demonstrate 1) laser-induced deterministic and effic

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Ghasemzadeh, Farzaneh, mohsen farokhnezhad та Mahdi Esmaeilzadeh. "Ultrafast switching in spin ﬁeld-eﬀect transistors based on borophene nanoribbons". Physical Chemistry Chemical Physics, 2024. http://dx.doi.org/10.1039/d4cp00239c.

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Borophene, owing to the high mobility and long spin coherent length of its carriers, presents signiﬁcant opportunities in ultrafast spintronics. In this research, we investigate the spin-dependent conductance of a...

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Walowski, Jakob, and Markus Muenzenberg. "ChemInform Abstract: Perspective: Ultrafast Magnetism and THz Spintronics." ChemInform 47, no. 48 (2016). http://dx.doi.org/10.1002/chin.201648262.

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Davies, C. S., and A. Kirilyuk. "Epsilon-near-zero regime for ultrafast opto-spintronics." npj Spintronics 2, no. 1 (2024). http://dx.doi.org/10.1038/s44306-024-00025-4.

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AbstractOver the last two decades, breakthrough works in the field of non-linear phononics have revealed that high-frequency lattice vibrations, when driven to high amplitude by mid- to far-infrared optical pulses, can bolster the light-matter interaction and thereby lend control over a variety of spontaneous orderings. This approach fundamentally relies on the resonant excitation of infrared-active transverse optical phonon modes, which are characterized by a maximum in the imaginary part of the medium’s permittivity. Here, in this Perspective article, we discuss an alternative strategy where

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Remy, Quentin, Julius Hohlfeld, Maxime Vergès, et al. "Accelerating ultrafast magnetization reversal by non-local spin transfer." Nature Communications 14, no. 1 (2023). http://dx.doi.org/10.1038/s41467-023-36164-1.

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AbstractWhen exciting a magnetic material with a femtosecond laser pulse, the amplitude of magnetization is no longer constant and can decrease within a time scale comparable to the duration of the optical excitation. This ultrafast demagnetization can even trigger an ultrafast, out of equilibrium, phase transition to a paramagnetic state. The reciprocal effect, namely an ultrafast remagnetization from the zero magnetization state, is a necessary ingredient to achieve a complete ultrafast reversal. However, the speed of remagnetization is limited by the universal critical slowing down which ap

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Rouzegar, R., A.L. Chekhov, Y. Behovits, et al. "Broadband Spintronic Terahertz Source with Peak Electric Fields Exceeding 1.5 MV/cm." March 6, 2023. https://doi.org/10.1103/PhysRevApplied.19.034018.

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In this work, we improve the performance of an optically pumped spintronic terahertz emitter (STE) by a factor of up to 6 in field amplitude through an optimized photonic and thermal environment. Using high-energy pump pulses (energy 5 mJ, fluence >1 mJ/cm2, wavelength 800 nm, duration 80 fs), we routinely generate terahertz pulses with focal peak electric fields above 1.5 MV/cm, fluences of the order of 1 mJ/cm2, and a spectrum covering the range 0.1–11 THz. Remarkably, the field and fluence values are comparable to those obtained from a state-of-th

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Guo, Zhenzhou, Xiaotian Wang, Wenhong Wang, Gang Zhang, Xiaodong Zhou, and Zhenxiang Cheng. "Spin‐Polarized Antiferromagnets for Spintronics." Advanced Materials, June 19, 2025. https://doi.org/10.1002/adma.202505779.

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AbstractSpin‐polarized antiferromagnets (AFMs), including altermagnets, noncollinear AFMs, and 2D layer‐polarized AFMs, have emerged as transformative materials for next‐generation spintronic and optoelectronic technologies. These systems uniquely combine spin‐polarized electronic states with vanishing net magnetization, enabling ultrafast spin dynamics, high‐density integration, and robustness against stray magnetic fields. Their unconventional symmetry‐breaking mechanisms—governed by crystal symmetry, chiral spin textures, or interlayer potential control—give rise to emergent phenomena previ

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Lee, Sang-Eun, Yoav William Windsor, Daniela Zahn, et al. "Controlling 4f antiferromagnetic dynamics via itinerant electronic susceptibility." Physical Review Research 6, no. 4 (2024). http://dx.doi.org/10.1103/physrevresearch.6.043019.

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Optical manipulation of magnetism holds promise for future ultrafast spintronics, especially with lanthanides and their huge, localized 4f magnetic moments. These moments interact indirectly by spin polarizing the conduction electrons (the Ruderman-Kittel-Kasuya-Yosida exchange interaction), influenced by interatomic orbital overlap, and the conduction electron's susceptibility around the Fermi level. Here, we study this influence in a series of 4f antiferromagnets, GdT2Si2 (T = Co, Rh, Ir), using ultrafast resonant x-ray diffraction. We observe a twofold increase in the ultrafast intersublatt

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Qin, Peixin, Xiaorong Zhou, Li Liu, et al. "Antiferromagnetic spintronics: towards high-density and ultrafast information technology." Science Bulletin, April 2023. http://dx.doi.org/10.1016/j.scib.2023.04.024.

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Matsubara, Masakazu, Takatsugu Kobayashi, Hikaru Watanabe, Youichi Yanase, Satoshi Iwata, and Takeshi Kato. "Polarization-controlled tunable directional spin-driven photocurrents in a magnetic metamaterial with threefold rotational symmetry." Nature Communications 13, no. 1 (2022). http://dx.doi.org/10.1038/s41467-022-34374-7.

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AbstractFuture spintronics and quantum technologies will require a portfolio of techniques for manipulating electron spins in functional nanodevices. Especially, the establishment of the methods to control spin current is the key ingredient essential for the transfer and processing of information, enabling faster and low-energy operation. However, a universal method for manipulating spin currents with full-directional controllability and tunable magnitude has not been established. Here we show that an artificial material called a magnetic metamaterial (MM), which possesses a novel spintronic f

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Xu, Shuai, Hao Xie, Yiming Zhang та ін. "Designing spintronic devices in two-dimensional γ-graphyne: from ultrafast spin dynamics to logic applications". Journal of Physics D: Applied Physics, 5 квітня 2024. http://dx.doi.org/10.1088/1361-6463/ad3b09.

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Abstract The integration of two-dimensional (2D) materials into spintronics represents a frontier in the development of novel computational devices. In this work, by utilizing ab initio many-body theory, we investigate the spin dynamics within the Co-doped γ-graphyne structure, with a particular emphasis on the role of cobalt atoms as magnetic centers. The result reveals that each cobalt atom on the γ-graphyne hosts states with enough spin-density localization to facilitate both local spin flips and global spin transfers. The spin-dynamic processes in our study are characterized by ultrafast t

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Zhang, Shengjie, Yufei Pei, Shiqi Hu, et al. "Light-induced phonon-mediated magnetization in monolayer MoS₂." Chinese Physics Letters, May 29, 2023. http://dx.doi.org/10.1088/0256-307x/40/7/077502.

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Abstract Light-induced ultrafast spin dynamics in materials is of great importance for the developments of spintronics and magnetic storage technology. Recent progresses include ultrafast demagnetization, magnetic switching and magnetic phase transitions while the ultrafast generation of magnetism is hardly achieved. Here, a strong light-induced magnetization (up to 0.86μB per formula unit) has been identified in non-magnetic monolayer molybdenum disulfide (MoS2). With the state-of-the-art time-dependent density functional theory simulations, we demonstrate that the out-of-plane magnetization

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Xu, Jinsong, Weiwei Lin, Jiaming He, et al. "Vector spin Seebeck effect and spin swapping effect in antiferromagnetic insulators with non-collinear spin structure." APL Materials 11, no. 9 (2023). http://dx.doi.org/10.1063/5.0156379.

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Antiferromagnets (AFs) are prospective for next-generation high-density and high-speed spintronic applications due to their negligible stray field and ultrafast spin dynamics, notwithstanding the challenges in detecting and manipulating AF order with no magnetization (M = 0). Among the AFs, non-collinear AFs are of particular interest because of their unique properties arising from the non-collinear spin structure and the small magnetization M. In this work, we describe the recently observed vector spin Seebeck effect in non-collinear LuFeO3, where the magneto-thermovoltage under an in-plane t

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Chen, Xin, Shuwen Zheng, Xue-Peng Wang, and Hai-yu Wang. "Ultrafast dynamics of spin relaxation in monolayer WSe2 and WSe2/graphene heterojunction." Physical Chemistry Chemical Physics, 2022. http://dx.doi.org/10.1039/d2cp02105f.

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Excitonic devices based on two-dimensional (2D) transition metal dichalcogenides (TMDCs) can combine spintronics with valleytronics due to its special energy band structure. In this work, we studied the generation and...

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