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Journal articles on the topic 'Spin wave'

Author: Grafiati

Published: 4 June 2021

Last updated: 27 April 2022

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1

Zheng, Lei, Lichuan Jin, Tianlong Wen, Yulong Liao, Xiaoli Tang, Huaiwu Zhang, and Zhiyong Zhong. "Spin wave propagation in uniform waveguide: effects, modulation and its application." Journal of Physics D: Applied Physics 55, no. 26 (March 1, 2022): 263002. http://dx.doi.org/10.1088/1361-6463/ac4b58.

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Abstract Magnonics, or spin waves, are one of the most promising candidate technologies for information processing beyond complementary metal oxide semiconductors. Information encoded by spin waves, which uses the frequency, amplitude and/or phase to encode information, has a great many advantages such as extremely low energy loss and wideband frequency. Moreover, the nonlinear characteristics of spin waves can enhance the extra degrees of processing freedom for information. A typical spin wave device consists of a spin wave source (transmitter), spin wave waveguide and spin wave detector. The spin wave waveguide plays an important role of propagating and modulating the spin wave to fulfill the device’s function. This review provides a tutorial overview of the various effects of coherent spin wave propagation and recent research progress on a uniform spin wave waveguide. Furthermore, we summarize the methods of modulating propagation of a spin wave in a uniform waveguide, and analyze the experimental and calculated results of the spin wave propagation profile and dispersion curve under different modulation methods. This review may promote the development of information transmission technology based on spin waves.

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2

Froes, D., M. Arana, L. C. Sampaio, and J. P. Sinnecker. "Acoustic wave surfing: spin waves and spin pumping driven by elastic wave." Journal of Physics D: Applied Physics 54, no. 25 (April 6, 2021): 255001. http://dx.doi.org/10.1088/1361-6463/abed71.

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3

Long, M. W., and W. Yeung. "Spin waves in multiple-spin-density-wave systems." Journal of Physics C: Solid State Physics 19, no. 9 (March 30, 1986): 1409–29. http://dx.doi.org/10.1088/0022-3719/19/9/012.

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4

Long, Yang, Jie Ren, and Hong Chen. "Intrinsic spin of elastic waves." Proceedings of the National Academy of Sciences 115, no. 40 (September 18, 2018): 9951–55. http://dx.doi.org/10.1073/pnas.1808534115.

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Unveiling spins of physical systems usually gives people a fundamental understanding of the geometrical properties of waves from classical to quantum aspects. A great variety of research has shown that transverse waves can possess nontrivial spins and spin-related properties naturally. However, until now, we still lack essential physical insights about the spin nature of longitudinal waves. Here, demonstrated by elastic waves, we uncover spins for longitudinal waves and the mixed longitudinal–transverse waves that play essential roles in spin–momentum locking. Based on this spin perspective, several abnormal phenomena beyond pure transverse waves are attributed to the hybrid spin induced by mixed longitudinal–transverse waves. The unique hybrid spin reveals the complex spin essence in elastic waves and advances our understanding about their fundamental geometrical properties. We also show that these spin-dependent phenomena can be exploited to control the wave propagation, such as nonsymmetric elastic wave excitation by spin pairs, a unidirectional Rayleigh wave, and spin-selected elastic wave routing. These findings are generally applicable for wave cases with longitudinal and transverse components.

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5

Bertelli, Iacopo, Joris J. Carmiggelt, Tao Yu, Brecht G. Simon, Coosje C. Pothoven, Gerrit E. W. Bauer, Yaroslav M. Blanter, Jan Aarts, and Toeno van der Sar. "Magnetic resonance imaging of spin-wave transport and interference in a magnetic insulator." Science Advances 6, no. 46 (November 2020): eabd3556. http://dx.doi.org/10.1126/sciadv.abd3556.

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Spin waves—the elementary excitations of magnetic materials—are prime candidate signal carriers for low-dissipation information processing. Being able to image coherent spin-wave transport is crucial for developing interference-based spin-wave devices. We introduce magnetic resonance imaging of the microwave magnetic stray fields that are generated by spin waves as a new approach for imaging coherent spin-wave transport. We realize this approach using a dense layer of electronic sensor spins in a diamond chip, which combines the ability to detect small magnetic fields with a sensitivity to their polarization. Focusing on a thin-film magnetic insulator, we quantify spin-wave amplitudes, visualize spin-wave dispersion and interference, and demonstrate time-domain measurements of spin-wave packets. We theoretically explain the observed anisotropic spin-wave patterns in terms of chiral spin-wave excitation and stray-field coupling to the sensor spins. Our results pave the way for probing spin waves in atomically thin magnets, even when embedded between opaque materials.

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6

Franjic, F., and S. Sorella. "Spin-Wave Wave Function for Quantum Spin Models." Progress of Theoretical Physics 97, no. 3 (March 1, 1997): 399–406. http://dx.doi.org/10.1143/ptp.97.399.

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7

Zhou, Zhen-Wei, Xi-Guang Wang, Yao-Ghuang Nie, Qing-Lin Xia, and Guang-Hua Guo. "Strong high-frequency spin waves released periodically from a confined region." European Physical Journal Applied Physics 91, no. 3 (September 2020): 30601. http://dx.doi.org/10.1051/epjap/2020200144.

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Efficient excitation of spin waves is a key issue in magnonics. Here, by using micromagnetic simulation and analytical analysis, we study the excitation of spin waves confined in a limited region by a microwave field with assistance of spin-transfer torque. The results show that the spin-transfer torque can decrease the effective damping constant and increase the spin wave relaxation time substantially. As a result, the amplitude of the excited spin waves is increased greatly. By periodically lifting and establishing the blocking areas, strong spin-wave pulses are released from the confined region. Such generated spin-wave pulses are much stronger than traditionally excited spin waves, especially for high-frequency spin waves. Our study provides a new method to generate strong high-frequency spin waves.

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8

Wang, Q., T. Brächer, M. Mohseni, B. Hillebrands, V. I. Vasyuchka, A. V. Chumak, and P. Pirro. "Nanoscale spin-wave wake-up receiver." Applied Physics Letters 115, no. 9 (August 26, 2019): 092401. http://dx.doi.org/10.1063/1.5109623.

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9

Khitun, Alexander, Dmitri E. Nikonov, and Kang L. Wang. "Magnetoelectric spin wave amplifier for spin wave logic circuits." Journal of Applied Physics 106, no. 12 (December 15, 2009): 123909. http://dx.doi.org/10.1063/1.3267152.

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10

Han, Jiahao, Pengxiang Zhang, Justin T. Hou, Saima A. Siddiqui, and Luqiao Liu. "Mutual control of coherent spin waves and magnetic domain walls in a magnonic device." Science 366, no. 6469 (November 28, 2019): 1121–25. http://dx.doi.org/10.1126/science.aau2610.

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The successful implementation of spin-wave devices requires efficient modulation of spin-wave propagation. Using cobalt/nickel multilayer films, we experimentally demonstrate that nanometer-wide magnetic domain walls can be applied to manipulate the phase and magnitude of coherent spin waves in a nonvolatile manner. We further show that a spin wave can, in turn, be used to change the position of magnetic domain walls by means of the spin-transfer torque effect generated from magnon spin current. This mutual interaction between spin waves and magnetic domain walls opens up the possibility of realizing all-magnon spintronic devices, in which one spin-wave signal can be used to control others by reconfiguring magnetic domain structures.

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11

Li, Jianhua, Wen-Bing Xu, Wen-Cheng Yue, Zixiong Yuan, Tan Gao, Ting-Ting Wang, Zhi-Li Xiao, et al. "Writable spin wave nanochannels in an artificial-spin-ice-mediated ferromagnetic thin film." Applied Physics Letters 120, no. 13 (March 28, 2022): 132404. http://dx.doi.org/10.1063/5.0085455.

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Magnonics, which employs spin-waves to transmit and process information, is a promising venue for low-power data processing. One of the major challenges is the local control of the spin-wave propagation path. Here, we introduce the concept of writable magnonics by taking advantage of the highly flexible reconfigurability and rewritability of artificial spin ice systems. Using micromagnetic simulations, we show that globally switchable spin-wave propagation and locally writable spin-wave nanochannels can be realized in a ferromagnetic thin film underlying an artificial pinwheel spin ice. The rewritable magnonics enabled by reconfigurable spin wave nanochannels provides a unique setting to design programmable magnonic circuits and logic devices for ultra-low power applications.

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12

Long, M. W., and W. Yeung. "Spin waves in itinerant multiple-spin-density-wave systems. I." Journal of Physics F: Metal Physics 17, no. 5 (May 1987): 1175–94. http://dx.doi.org/10.1088/0305-4608/17/5/016.

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13

Long, M. W., and W. Yeung. "Spin waves in itinerant multiple-spin-density-wave systems. II." Journal of Physics F: Metal Physics 17, no. 5 (May 1987): 1195–220. http://dx.doi.org/10.1088/0305-4608/17/5/017.

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14

Iqbal, Z., Mehak Younas, Imran A. Khan, and G. Murtaza. "Spin magnetoacoustic wave." Physics of Plasmas 26, no. 11 (November 2019): 112101. http://dx.doi.org/10.1063/1.5099945.

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15

Horiuchi, Noriaki. "Spin-wave manipulation." Nature Photonics 6, no. 10 (October 2012): 706. http://dx.doi.org/10.1038/nphoton.2012.238.

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16

Choi, Sangkook, Ki-Suk Lee, and Sang-Koog Kim. "Spin-wave interference." Applied Physics Letters 89, no. 6 (August 7, 2006): 062501. http://dx.doi.org/10.1063/1.2259813.

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17

Bryant, Paul, Carson Jeffries, and Katsuhiro Nakamura. "Spin-wave turbulence." Nuclear Physics B - Proceedings Supplements 2 (November 1987): 25–36. http://dx.doi.org/10.1016/0920-5632(87)90006-5.

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18

Nezu, S., T. Scheike, H. Sukegawa, and K. Sekiguchi. "Propagating backward-volume spin waves in epitaxial Fe films." AIP Advances 12, no. 3 (March 1, 2022): 035320. http://dx.doi.org/10.1063/9.0000258.

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The propagation characteristics of backward-volume magnetostatic spin-waves in epitaxial Fe(001) films were studied by frequency-domain and time-domain spin-wave propagation spectroscopies using a vector network analyser. Due to the combination of cubic-magnetocrystalline anisotropy and anisotropic spin-wave dispersion, the backward-volume spin-wave exhibited a complicated packet propagation. For the hard-axis propagation, the group velocity of the spin wave was greatly enhanced at low external magnetic fields and propagation occurred even under no magnetic field. By analysing within a theoretical model and micromagnetic simulations, these transmission character of the backward-volume magnetostatic spin-waves in an epitaxial iron film was well reproduced. The observed characteristics are essential information to promote two-dimensional magnonic devices utilizing cubic-anisotropic materials.

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19

Brächer, T., M. Fabre, T. Meyer, T. Fischer, S. Auffret, O. Boulle, U. Ebels, P. Pirro, and G. Gaudin. "Detection of Short-Waved Spin Waves in Individual Microscopic Spin-Wave Waveguides Using the Inverse Spin Hall Effect." Nano Letters 17, no. 12 (November 22, 2017): 7234–41. http://dx.doi.org/10.1021/acs.nanolett.7b02458.

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20

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 the skyrmion, through the SW’s linear momentum transfer torque acting on the skyrmion. Besides amplitude, the reflectivity of the spin wave by skyrmion has tremendous impact on the velocity of skyrmion motion. The skyrmion velocities are mainly determined by the reflectivity, when the spin-wave amplitude is almost identical. Our results give guidance for the design and development of spin-wave control spintronics.

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21

Li, Xu, Dominic Labanowski, Sayeef Salahuddin, and Christopher S. Lynch. "Spin wave generation by surface acoustic waves." Journal of Applied Physics 122, no. 4 (July 28, 2017): 043904. http://dx.doi.org/10.1063/1.4996102.

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22

Ishibashi, Mio, Yoichi Shiota, Tian Li, Shinsaku Funada, Takahiro Moriyama, and Teruo Ono. "Switchable giant nonreciprocal frequency shift of propagating spin waves in synthetic antiferromagnets." Science Advances 6, no. 17 (April 2020): eaaz6931. http://dx.doi.org/10.1126/sciadv.aaz6931.

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The nonreciprocity of propagating spin waves, i.e., the difference in amplitude and/or frequency depending on the propagation direction, is essential for the realization of spin wave–based logic circuits. However, the nonreciprocal frequency shifts demonstrated so far are not large enough for applications because they originate from interfacial effects. In addition, switching of the spin wave nonreciprocity in the electrical way remains a challenging issue. Here, we show a switchable giant nonreciprocal frequency shift of propagating spin waves in interlayer exchange–coupled synthetic antiferromagnets. The observed frequency shift is attributed to large asymmetric spin wave dispersion caused by a mutual dipolar interaction between two magnetic layers. Furthermore, we find that the sign of the frequency shift depends on relative configuration of two magnetizations, based on which we demonstrate an electrical switching of the nonreciprocity. Our findings provide a route for switchable and highly nonreciprocal spin wave–based applications.

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23

Wang, Xi-Guang, Guang-Hua Guo, Guang-Fu Zhang, Yao-Zhuang Nie, and Qing-Lin Xia. "Spin-wave resonance reflection and spin-wave induced domain wall displacement." Journal of Applied Physics 113, no. 21 (June 7, 2013): 213904. http://dx.doi.org/10.1063/1.4808298.

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24

Talmelli, Giacomo, Thibaut Devolder, Nick Träger, Johannes Förster, Sebastian Wintz, Markus Weigand, Hermann Stoll, et al. "Reconfigurable submicrometer spin-wave majority gate with electrical transducers." Science Advances 6, no. 51 (December 2020): eabb4042. http://dx.doi.org/10.1126/sciadv.abb4042.

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Spin waves are excitations in ferromagnetic media that have been proposed as information carriers in hybrid spintronic devices with much lower operation power than conventional charge-based electronics. Their wave nature can be exploited in majority gates by using interference for computation. However, a scalable spin-wave majority gate that can be cointegrated alongside conventional electronics is still lacking. Here, we demonstrate a submicrometer inline spin-wave majority gate with fan-out. Time-resolved imaging of the magnetization dynamics by scanning transmission x-ray microscopy illustrates the device operation. All-electrical spin-wave spectroscopy further demonstrates majority gates with submicrometer dimensions, reconfigurable input and output ports, and frequency-division multiplexing. Challenges for hybrid spintronic computing systems based on spin-wave majority gates are discussed.

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25

Хивинцев, Ю. В., Г. М. Дудко, В. К. Сахаров, Ю. В. Никулин, and Ю. А. Филимонов. "Распространение спиновых волн в микроструктурах на основе пленок железоиттриевого граната, декорированных ферромагнитным металлом." Физика твердого тела 61, no. 9 (2019): 1664. http://dx.doi.org/10.21883/ftt.2019.09.48108.15n.

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The propagation of spin waves in an yttrium iron garnet film decorated by nickel film microstructures was experimentally and theoretically studied. It is shown that one can control the spin wave damping and form the spin wave beams by choosing geometry of the nickel microstructures.

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26

Ong, Perkins Jon, and Danilo M. Yanga. "Damping of spin waves in high-Tc superconductors in the spin polaron formulation." International Journal of Modern Physics B 32, no. 15 (June 18, 2018): 1850190. http://dx.doi.org/10.1142/s0217979218501904.

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The damping of spin waves in high-T[Formula: see text] superconductors is investigated in this paper. We use the spin polaron formulation in the finite temperature (Matsubara) Green’s function method in a representation, where holes are described as spinless fermions (holons) and spins as normal bosons characterized by the hard-core bosonic operators in accordance with the Holstein–Primakoff transformation. The interaction of holes with spin waves is then described by a Hamiltonian, which resembles the conventional polaron problem and came to be known as the spin polaron Hamiltonian. The rate of the damping of spin waves is then obtained from the self-energy term of the spin wave Green’s function at finite temperature. In the limit of zero temperature and low frequency, the spin wave damping was subsequently determined. We evaluated the same quantity by analytic continuation to get the zero temperature result.

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27

Одинцов, С. А., А. А. Амиров, А. А. Грачев, В. В. Родионова, and А. В. Садовников. "Модовая фильтрация поверхностных магнитостатических волн в YIG/FeRh." Физика твердого тела 63, no. 9 (2021): 1317. http://dx.doi.org/10.21883/ftt.2021.09.51307.24h.

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A numerical study of the features of the propagation of spin waves in a waveguide made of yttrium-ron garnet (YIG) and Fe-Rh alloy in the form of a plate, located on top of the central part of the YIG, has been carried out. Based on the simulation results, the possibilities of controlling the dynamics of spin waves in the structure under study were also revealed. Micromagnetic numerical simulation was used to study the transfer of a spin-wave signal in a multimode mode by numerically solving the Landau – Lifshitz – Hilbert equation. Transformation of the transmission spectra of spin waves shows that the proposed structure will make it possible to control the propagation of spin-wave modes due to a sharp change in the Fe-Rh magnetization in the region of the magnetic phase transition temperature close to room temperature. In addition, the spin wave signal can be controlled by a small temperature change in the Fe-Rh plate generated by laser radiation. The two-layer structure of YIG/Fe-Rh, from an applied point of view, can be used as a functional unit in planar magnon networks performing space-frequency demultiplexing and filtering of spin-wave modes.

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28

Константинян, К. И., Г. А. Овсянников, К. Л. Станкевич, Т. А. Шайхулов, В. А. Шмаков, and А. А. Климов. "Влияние амплитуды СВЧ-воздействия на спиновый ток границы платина/железоиттриевый гранат." Физика твердого тела 63, no. 9 (2021): 1312. http://dx.doi.org/10.21883/ftt.2021.09.51258.23h.

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A numerical study of the features of the propagation of spin waves in a waveguide made of yttrium iron garnet (YIG) and Fe-Rh alloy in the form of a plate, located on top of the central part of the YIG, is carried out. Based on the simulation results, the possibilities of controlling the dynamics of spin waves in the structure under study were also revealed. Micromagnetic numerical simulation was used to study the transfer of a spin-wave signal in a multimode mode by numerically solving the Landau – Lifshitz – Hilbert equation. Transformation of the transmission spectra of spin waves shows that the proposed structure will make it possible to control the propagation of spin-wave modes due to a sharp change in the Fe-Rh magnetization in the region of the magnetic phase transition temperature close to room temperature. In addition, the spin wave signal can be controlled by a small temperature change in the Fe-Rh plate generated by the laser radiation. The two-layer structure of YIG / Fe-Rh, from an applied point of view, can be used as a functional unit in planar magnon networks performing space-frequency demultiplexing and filtering of spin-wave modes.

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29

Zhuo, Fengjun, Hang Li, Zhenxiang Cheng, and Aurélien Manchon. "Magnonic Metamaterials for Spin-Wave Control with Inhomogeneous Dzyaloshinskii–Moriya Interactions." Nanomaterials 12, no. 7 (March 31, 2022): 1159. http://dx.doi.org/10.3390/nano12071159.

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A magnonic metamaterial in the presence of spatially modulated Dzyaloshinskii–Moriya interaction is theoretically proposed and demonstrated by micromagnetic simulations. By analogy to the fields of photonics, we first establish magnonic Snell’s law for spin waves passing through an interface between two media with different dispersion relations due to different Dzyaloshinskii–Moriya interactions. Based on magnonic Snell’s law, we find that spin waves can experience total internal reflection. The critical angle of total internal reflection is strongly dependent on the sign and strength of Dzyaloshinskii–Moriya interaction. Furthermore, spin-wave beam fiber and spin-wave lens are designed by utilizing the artificial magnonic metamaterials with inhomogeneous Dzyaloshinskii–Moriya interactions. Our findings open up a rich field of spin waves manipulation for prospective applications in magnonics.

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30

SOGO, KIYOSHI. "A NEW MECHANISM OF HIGH Tc SUPERCONDUCTIVITY BY ANTIFERROMAGNETIC SPIN WAVES." Modern Physics Letters B 01, no. 07n08 (November 1987): 315–21. http://dx.doi.org/10.1142/s0217984987000454.

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New mechanism of superconductivity is presented, which utilizes antiferromagnetic spin waves. It is found that for the case of Ising like anisotropy the spin wave coherence strongly enhances the superconductive coupling constant, which gives rise to a rather high critical temperature. Sloppy spin wave mechanism is also suggested.

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31

Iskhakov, Rauf S., S. V. Stolyar, L. A. Chekanova, and M. V. Chizhik. "Spin-Wave Resonance in Multilayer Films." Solid State Phenomena 168-169 (December 2010): 73–76. http://dx.doi.org/10.4028/www.scientific.net/ssp.168-169.73.

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For the first time characteristic modification of a spectrum of the exchange spin waves, caused by the first stop-band at a wave vector kb=π/(d1+d2) the magnon crystal formed by one-dimensional modulation of the exchange or magnetization has been found by the spin-wave resonance (SWR) technique in multilayer structures “ferromagnet/ferromagnet” with N(d1+d2) thickness. It is shown that at transformation of a multilayer film after thermal annealing in a film of a single-phase alloy the given modification of a spectrum disappears.

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32

Bray, A. J. "Spin-wave gap in uniaxial spin glasses." Physical Review B 35, no. 10 (April 1, 1987): 4850–53. http://dx.doi.org/10.1103/physrevb.35.4850.

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33

Andrienko, A. V., V. I. Ozhogin, V. L. Safonov, and A. Yu Yakubovskii. "Nuclear spin wave research." Uspekhi Fizicheskih Nauk 161, no. 10 (1991): 1. http://dx.doi.org/10.3367/ufnr.0161.199110a.0001.

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34

Graydon, Oliver. "Spin-wave memory upgrade." Nature Photonics 8, no. 10 (October 2014): 747. http://dx.doi.org/10.1038/nphoton.2014.238.

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35

Andrienko, A. V., V. I. Ozhogin, V. L. Safonov, and A. Yu Yakubovskiĭ. "Nuclear spin wave research." Soviet Physics Uspekhi 34, no. 10 (October 31, 1991): 843–61. http://dx.doi.org/10.1070/pu1991v034n10abeh002523.

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36

Kostylev, M. P., A. A. Serga, T. Schneider, B. Leven, and B. Hillebrands. "Spin-wave logical gates." Applied Physics Letters 87, no. 15 (October 10, 2005): 153501. http://dx.doi.org/10.1063/1.2089147.

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37

Yearchuck, D., Y. Yerchak, and A. Alexandrov. "Antiferroelectric spin wave resonance." Physics Letters A 373, no. 4 (January 2009): 489–95. http://dx.doi.org/10.1016/j.physleta.2008.11.061.

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38

Rezende, S. M., F. M. de Aguiar, and A. Azevedo. "Controlling spin‐wave chaos." Journal of Applied Physics 75, no. 10 (May 15, 1994): 5613–15. http://dx.doi.org/10.1063/1.355658.

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39

de Aguiar, F. M., S. M. Rezende, and F. C. S. da Silva. "Spin‐wave chaotic transients." Journal of Applied Physics 75, no. 10 (May 15, 1994): 5616–18. http://dx.doi.org/10.1063/1.355659.

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40

de Aguiar, F. M., S. M. Rezende, F. C. S. da Silva, and A. Azevedo. "Transient spin-wave intermittency." Journal of Magnetism and Magnetic Materials 140-144 (February 1995): 1933–34. http://dx.doi.org/10.1016/0304-8853(94)01218-0.

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41

Loide, R.-K., and A. Polt. "SPIN-3 WAVE EQUATIONS." Proceedings of the Academy of Sciences of the Estonian SSR. Physics. Mathematics 37, no. 3 (1988): 322. http://dx.doi.org/10.3176/phys.math.1988.3.09.

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42

BELHADI, M., N. AIDER, and A. KHATER. "SPIN WAVES TRANSMISSION VIA A MOLECULAR JUNCTION CONNECTING TWO QUASI-2D HEISENBERG FERROMAGNETS." International Journal of Nanoscience 08, no. 06 (December 2009): 557–64. http://dx.doi.org/10.1142/s0219581x09006377.

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A theoretical investigation of spin wave dynamics and scattering at a molecular junction between two Heisenberg ferromagnets is presented. The model system consists of two ferromagnetic ultrathin films with equal thickness of three atomic layers, joined together by a magnetic molecule. No electronic effects are considered, but local changes in the magnetic exchange field are assumed to be dominant. The mathematical framework of the matching method is used with nearest neighbor magnetic exchange interactions, to analyze both the spin fluctuation dynamics and the spin wave scattering phenomena at the junction boundary. The coherent reflection and transmission probabilities and the conductance of spin waves incident from the interior of the films onto the boundary are calculated in accordance with the Landauer–Büttiker formalism, and numerical results are presented for representative sets of system parameters for a large range of scattering frequencies. The scattered spectra show interesting sharp features, with associated Fano resonances, as a function of scattering frequencies, system parameters, and spin wave incidence angle. Moreover, a frequency selective conductance of the spin waves via Fano resonances can be obtained by an appropriate choice of the spin wave incident angle and system parameters.

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43

Helton, Joel S., Nicholas P. Butch, Daniel M. Pajerowski, Sergei N. Barilo, and Jeffrey W. Lynn. "Three-dimensional magnetism and the Dzyaloshinskii-Moriya interaction in S = 3/2 kagome staircase Co3V2O8." Science Advances 6, no. 18 (May 2020): eaay9709. http://dx.doi.org/10.1126/sciadv.aay9709.

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Time-of-flight neutron data reveal spin waves in the ferromagnetic ground state of the kagome staircase material Co3V2O8. While previous work has treated this material as quasi–two-dimensional, we find that an inherently three-dimensional description is needed to describe the spin wave spectrum throughout reciprocal space. Moreover, spin wave branches show gaps that point to an unexpectedly large Dzyaloshinskii-Moriya interaction on the nearest-neighbor bond, with D1 ≥ J1/2. A better understanding of the Dzyaloshinskii-Moriya interaction in this material should shed light on the multiferroicity of the related Ni3V2O8. At a higher temperature where Co3V2O8 displays an antiferromagnetic spin density wave structure, there are no well-defined spin wave excitations, with most of the spectral weight observed in broad diffuse scattering centered at the (0, 0.5, 0) antiferromagnetic Bragg peak.

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Kee, Hae-Young, Yong Baek Kim, and Kazumi Maki. "Spin waves in a two-dimensionalp-wave superconductor:Sr2RuO4." Physical Review B 61, no. 5 (February 1, 2000): 3584–91. http://dx.doi.org/10.1103/physrevb.61.3584.

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Kashuba, Alexander. "Renormalization Theory for Ordered Phase of 2D XY Magnet with Dipolar Interaction." International Journal of Modern Physics B 12, no. 12n13 (May 30, 1998): 1311–20. http://dx.doi.org/10.1142/s0217979298000739.

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In the ordered phase of 2D XY ferromagnet the dipolar interaction between spins induces a relevant interaction between spin-waves. Although the density of spin-waves is small at low temperature, this long-range interaction correlates two spatially separated spin-waves. Anomalous scaling of spin-wave correlation functions is found in both statics and dynamics cases.

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Mamica, Sławomir, Maciej Krawczyk, and Jarosław Wojciech Kłos. "Spin-Wave Band Structure in 2D Magnonic Crystals with Elliptically Shaped Scattering Centres." Advances in Condensed Matter Physics 2012 (2012): 1–6. http://dx.doi.org/10.1155/2012/161387.

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Spin waves in 2D periodic magnetic nanocomposites are studied by means of the plane wave method. The effect of the ellipticity and in-plane rotation of the scattering centers on the band structure is investigated, to indicate new possibilities of fine tuning of spin-wave filter passbands.

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Heinz, B., Q. Wang, R. Verba, V. I. Vasyuchka, M. Kewenig, P. Pirro, M. Schneider, et al. "Temperature Dependence of Spin Pinning and Spin-Wave Dispersion in Nanoscopic Ferromagnetic Waveguides." Ukrainian Journal of Physics 65, no. 12 (December 18, 2020): 1094. http://dx.doi.org/10.15407/ujpe65.12.1094.

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The field of magnonics attracts significant attention due to the possibility of utilizing information coded into the spin-wave phase or amplitude to perform computation operations on the nanoscale. Recently, spin waves were investigated in Yttrium Iron Garnet (YIG) waveguides with widths down to 50 nm and aspect ratios of thickness to width approaching unity. A critical width was found, below which the exchange interaction suppresses the dipolar pinning phenomenon, and the system becomes unpinned. Here, we continue these investigations and analyze the pinning phenomenon and spin-wave dispersion as functions of temperature, thickness, and material parameters. Higher order modes, the influence of a finite wavevector along the waveguide, and the impact of the pinning phenomenon on the spin-wave lifetime are discussed, as well as the influence of a trapezoidal cross-section and edge roughness of the waveguide. The presented results are of particular interest for potential applications in magnonic devices and the incipient field of quantum magnonics at cryogenic temperatures.

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Menezes, Raí M., Denis Šabani, Cihan Bacaksiz, Clécio C. de Souza Silva, and Milorad V. Milošević. "Tailoring high-frequency magnonics in monolayer chromium trihalides." 2D Materials 9, no. 2 (March 22, 2022): 025021. http://dx.doi.org/10.1088/2053-1583/ac5bf3.

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Abstract Monolayer chromium-trihalides, the archetypal two-dimensional (2D) magnetic materials, are readily suggested as a promising platform for high-frequency magnonics. Here we detail the spin-wave properties of monolayer CrBr3 and CrI3, using spin-dynamics simulations parametrized from the first principles. We reveal that spin-wave dispersion can be tuned in a broad range of frequencies by strain, paving the way towards flexo-magnonic applications. We further show that ever-present halide vacancies in these monolayers host sufficiently strong Dzyaloshinskii-Moriya interaction to scatter spin-waves, which promotes design of spin-wave guides by defect engineering. Finally we discuss the spectra of spin-waves propagating across a moiré-periodic modulation of magnetic parameters in a van der Waals heterobilayer, and show that the nanoscale moiré periodicities in such samples are ideal for realization of a magnonic crystal in the terahertz frequency range. Recalling the additional tunability of magnetic 2D materials by electronic gating, our results situate these systems among the front-runners for prospective high-frequency magnonic applications.

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Baryakhtar, V. G., and A. G. Danielevich. "Spin-wave damping at spin-orientation phase transitions." Low Temperature Physics 32, no. 8 (August 2006): 768–78. http://dx.doi.org/10.1063/1.2219498.

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Chen, X. M., and A. W. Overhauser. "Anisotropic spin susceptibility of spin-density-wave states." Physical Review B 42, no. 16 (December 1, 1990): 10601–9. http://dx.doi.org/10.1103/physrevb.42.10601.

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