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Journal articles on the topic 'All-optical helicity-independent switching'

Author: Grafiati
Published: 8 June 2024
Last updated: 31 July 2025

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1

Gao, Shihan, Runji Cai, Wanjie Xiong, and Chudong Xu. "Influence of a damping parameter on helicity-independent all-optical switching." Optics Express 29, no. 20 (2021): 32535. http://dx.doi.org/10.1364/oe.435160.

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2

Liu, Donglin, Jiawen Weng, Xinyu Song, Wenxi Cai, Suiyan Tan, and Chudong Xu. "Ultrafast write-read event in helicity-independent all-optical switching of GdFeCo." Journal of Magnetism and Magnetic Materials 592 (February 2024): 171824. http://dx.doi.org/10.1016/j.jmmm.2024.171824.

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3

Fan, Xiaofei, and Xiaoyang Lin. "Thermal impact on ultrafast helicity independent all-optical switching of GdxCo100-x." Journal of Physics: Conference Series 2230, no. 1 (2022): 012025. http://dx.doi.org/10.1088/1742-6596/2230/1/012025.

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Abstract Ultrafast all-optical switching by single femtosecond laser pulse has recently been considered as one of the most potential technologies for the application on high-speed and energy efficient memory device. Here, to ensure such a sophisticated technology to be applicable to more complex environments, we report the dependence of all-optical switching of the ferrimagnet, GdCo, on the ambient temperature. Through heating the GdCo film up to 380 K, we demonstrate the distinct magnetic behaviours and the critical laser fluences of all-optical switching under different composition of Gd. It
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4

Zimnyakova, Polina E., Daria O. Ignatyeva, Andrey N. Kalish, Xiufeng Han, and Vladimir I. Belotelov. "Plasmonic dichroism and all-optical magnetization switching in nanophotonic structures with GdFeCo." Optics Letters 47, no. 23 (2022): 6049. http://dx.doi.org/10.1364/ol.472046.

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We report on a phenomenon of plasmonic dichroism observed in magnetic materials with transverse magnetization under excitation of surface plasmon polariton waves. The effect originates from the interplay of the two magnetization-dependent contributions to the material absorption, both of which are enhanced under plasmon excitation. Plasmonic dichroism is similar to circular magnetic dichroism, which is at the base of all-optical helicity-dependent switching (AO-HDS) but observed for linearly polarized light, and the dichroism acts upon in-plane magnetized films, where AO-HDS does not take plac
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5

Huang, Haozhe, Haiwei Wang, Zhihao Zeng, et al. "Investigation on the Effect of Femtosecond Laser Induced Spin Transfer Torque of GdFeCo Alloy." Applied Sciences 11, no. 14 (2021): 6501. http://dx.doi.org/10.3390/app11146501.

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All-optical magnetic switching (AOS) provides a novel approach to improve writing ability and energy efficiency compared to those utilized in the mainstream magnetic data storage products. Rare earth-transition metals (RE-TM) exhibit extremely fast magnetization switching induced by one single incident linearly polarized laser pulse; however, the mechanism is still ambiguous. Here, we show by atomistic spin simulation that the laser induced spin transfer torque dominates the magnetization reversal of Fe sublattice in Gd25Fe75 alloy, and that the switching speed of Gd25Fe75 alloy is relevant to
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6

Davies, C. S., J. H. Mentink, A. V. Kimel, Th Rasing, and A. Kirilyuk. "Helicity-independent all-optical switching of magnetization in ferrimagnetic alloys." Journal of Magnetism and Magnetic Materials, August 2022, 169851. http://dx.doi.org/10.1016/j.jmmm.2022.169851.

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7

Hübner, Wolfgang, Georgios Lefkidis, and Guoping Zhang. "All-optical spin switching on an ultrafast time scale." Journal of Physics: Condensed Matter, June 25, 2024. http://dx.doi.org/10.1088/1361-648x/ad5bae.

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Abstract Information technology revolution demands bigger and faster magnetic storage technology. All-optical spin switching (AOS) may offer a solution, where an ultrafast laser pulse alone can switch magnetization from one direction to another faithfully within 1-10 ps, free of a magnetic field. There are two types of switching: One is the helicity-dependent all-optical spin switching (HD-AOS) and the other the helicity-independent all-optical spin switching (HID-AOS). In a few alloys, one single laser pulse, with sufficient fluence, can switch spin, but the majority of magnetic materials requires
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8

Peng, Y., G. Malinowski, J. Gorchon, et al. "Single-Shot Helicity-Independent All-Optical Switching in Co/Ho Multilayers." Physical Review Applied 20, no. 1 (2023). http://dx.doi.org/10.1103/physrevapplied.20.014068.

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9

Gweha Nyoma, Danny Petty, Maxime Vergès, Michel Hehn, et al. "Size effect on single pulse all-optical helicity-independent switching in GdFeCo disk arrays." Applied Physics Letters 123, no. 5 (2023). http://dx.doi.org/10.1063/5.0150250.

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We experimentally demonstrate single pulse toggle switching of the magnetization of GdFeCo disks with perpendicular to film plane anisotropy, which diameter ranges from 3 μm to 400 nm using 35 fs linearly polarized laser pulses. Two different magnetic states can be observed depending on the laser fluence: either a deterministic switching of the disk magnetization or a randomly oriented disk. We report that the fluence required to observe both magnetic states show a non-monotonic behavior with disk diameter and that the smallest disks require the lowest minimum fluence for achieving single puls
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10

Wei, Jiaqi, Boyu Zhang, Michel Hehn, et al. "All-optical Helicity-Independent Switching State Diagram in Gd - Fe - Co Alloys." Physical Review Applied 15, no. 5 (2021). http://dx.doi.org/10.1103/physrevapplied.15.054065.

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11

Sidiropoulos, Themistoklis, Puloma Singh, Tino Noll, et al. "Subwavelength Localized All-Optical Helicity-Independent Magnetic Switching Using Plasmonic Gold Nanostructures." Nano Letters, March 18, 2025. https://doi.org/10.1021/acs.nanolett.4c04024.

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12

Sait, Connor R. J., Maciej Dąbrowski, Jade N. Scott, et al. "Unidirectional multipulse helicity-independent all-optical switching in [Ni/Pt] based synthetic ferrimagnets." Physical Review B 109, no. 13 (2024). http://dx.doi.org/10.1103/physrevb.109.134417.

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13

Geiskopf, S., J. Igarashi, G. Malinowski, et al. "Single-shot all-optical magnetization switching in in-plane magnetized magnetic tunnel junction." Applied Physics Letters 126, no. 15 (2025). https://doi.org/10.1063/5.0254042.

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Single pulse All Optical Helicity-Independent Switching is demonstrated in an in-plane magnetized magnetic tunnel junction. A toggle switching of the 2 nm thick Co40Fe40B20 soft layer could be achieved by exchange coupling the Co40Fe40B20 with a 10 nm thick Co85Gd15 layer monitored by measuring the Tunnel magneto resistance of the device. The use of in plane magnetized electrodes relaxes the constrains linked to perpendicular magnetic anisotropy systems while achieving a tunneling magnetoresistance ratio exceeding 100%. The influence of the upper electrical electrode, which is opaque to the la
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14

P., Syam Prasad, and Jyoti Ranjan Mohanty. "Single shot all-optical switching in amorphous TbCo and the role of element specific damping on helicity-independent all-optical switching." Journal of Magnetism and Magnetic Materials, April 2023, 170701. http://dx.doi.org/10.1016/j.jmmm.2023.170701.

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15

Metternich, Daniel, Kai Litzius, Sebastian Wintz, et al. "Defects in magnetic domain walls after single-shot all-optical switching." Structural Dynamics 12, no. 2 (2025). https://doi.org/10.1063/4.0000287.

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Helicity-independent all-optical switching (HI-AOS) is the fastest known way to switch the magnetic order parameter. While the switching process of extended areas is well understood, the formation of domain walls enclosing switched areas remains less explored. Here, we study domain walls around all-optically nucleated magnetic domains using x-ray vector spin imaging and observe a high density of vertical Bloch line defects. Surprisingly, the defect density appears to be independent of optical pulse parameters, significantly varies between materials, and is only slightly higher than in domain w
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16

Polley, Debanjan, and Jeffrey Bokor. "A perspective on ultrafast magnetization switching in ferromagnets using helicity-independent optical pulses." Journal of Physics D: Applied Physics, December 20, 2024. https://doi.org/10.1088/1361-6463/ada1e0.

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Abstract We offer a brief overview of the present status of ultrafast helicity-independent all-optical magnetization switching (HI-AOS) phenomena in ferromagnet (FM) films and multilayers. The discovery of HI-AOS in ferrimagnet alloys dates back to 2011. From an application standpoint, utilizing HI-AOS in an FM brings about several benefits. One of these advantages is its enhanced spin polarization, which leads to a higher tunneling magneto-resistance (TMR) across a magnetic tunnel junction device. The enhanced TMR greatly enhances its reading capability. Time-resolved and single-shot magneto-
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17

Gao, Yang, Chong Wang, and Di Xiao. "Frequency-independent optical spin injection in Weyl semimetals." SciPost Physics Core 7, no. 1 (2024). http://dx.doi.org/10.21468/scipostphyscore.7.1.002.

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We demonstrate that in Weyl semimetals, the momentum-space helical spin texture can couple to the chirality of the Weyl node to generate a frequency-independent optical spin injection. This frequency-independence is rooted in the topology of the Weyl node. Since the helicity and the chirality are always locked for Weyl nodes, the injected spin from a pair of Weyl nodes always add up, implying no symmetry requirements for Weyl semimetals. Finally, we show that such frequency-independent spin injection is robust against multiband corrections and lattice-regularization effect and capable of reali
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18

Gorchon, J., R. B. Wilson, Y. Yang, et al. "Role of electron and phonon temperatures in the helicity-independent all-optical switching of GdFeCo." Physical Review B 94, no. 18 (2016). http://dx.doi.org/10.1103/physrevb.94.184406.

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19

P, Syam Prasad, and Jyoti Ranjan Mohanty. "Ultrafast optical pumping induced polarity and chirality reversal of Néel skyrmions in amorphous GdFeCo ferrimagnet." Applied Physics Letters 125, no. 7 (2024). http://dx.doi.org/10.1063/5.0209772.

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The development of next-generation data storage devices relies on the efficient control of topological spin textures at ultrafast timescales with minimal energy consumption. Here, we theoretically investigate the switching of the magnetic skyrmion in ferrimagnetic GdFeCo utilizing the helicity-independent all-optical switching (HI-AOS) driven by femtosecond laser pulses. Our study demonstrates the switching of Néel skyrmion between the two degenerate skyrmion ground states having opposite polarity and chirality. A systematic study was done by varying the laser fluence, and we found that single
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20

Ceballos, Alejandro, Akshay Pattabi, Amal El-Ghazaly, et al. "Role of element-specific damping in ultrafast, helicity-independent, all-optical switching dynamics in amorphous (Gd,Tb)Co thin films." Physical Review B 103, no. 2 (2021). http://dx.doi.org/10.1103/physrevb.103.024438.

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21

Zhang, Wei, Jun Xiao Lin, Tian Xun Huang, et al. "Role of spin-lattice coupling in ultrafast demagnetization and all optical helicity-independent single-shot switching in Gd1−x−yTbyCox alloys." Physical Review B 105, no. 5 (2022). http://dx.doi.org/10.1103/physrevb.105.054410.

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