Laser-induced topological spin switching in a 2D van der Waals magnet.
Laser-induced topological spin switching in a 2D van der Waals magnet.
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DOI：
10.1038/s41467-023-37082-y
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发表时间：
2023-03-13
影响因子：
16.6
通讯作者：
Santos, Elton J. G.
中科院分区：
文献类型：
--
作者：
Khela, Maya;Dabrowski, Maciej;Khan, Safe;Keatley, Paul S.;Verzhbitskiy, Ivan;Eda, Goki;Hicken, Robert J.;Kurebayashi, Hidekazu;Santos, Elton J. G.
二维（2D）货车德瓦耳斯（vdW）磁体由于其广泛的电子、磁性和拓扑性质而代表了节能自旋电子学应用的最有前途的前景之一。然而，很少有人知道的vdW层中的光和自旋属性之间的相互作用。在这里，我们表明，超快激光激发不仅可以产生不同类型的自旋织构在CrGeTe3 VDW磁体，但也诱导它们之间的拓扑开关机制的可逆变换。我们的原子自旋动力学模拟和宽场克尔显微镜测量表明，不同的纹理可以通过高强度的激光脉冲在皮秒制度。不同的拓扑自旋纹理之间的相变获得额外的激光脉冲施加到系统中的极化和自旋的最终状态可以由外部磁场控制。我们的研究结果表明，激光驱动的自旋纹理的二维磁体作为一种途径，可重构拓扑结构在原子水平。货车德瓦耳斯磁性材料，保持其磁有序下降到单层已被发现主机各种自旋纹理，包括拓扑自旋纹理，如skyrmions。在这里，Khela等人展示了CrGeTe3中skyrmions、反skyrmions和条纹畴之间的激光诱导拓扑开关。
Two-dimensional (2D) van der Waals (vdW) magnets represent one of the most promising horizons for energy-efficient spintronic applications because their broad range of electronic, magnetic and topological properties. However, little is known about the interplay between light and spin properties in vdW layers. Here we show that ultrafast laser excitation can not only generate different type of spin textures in CrGeTe3 vdW magnets but also induce a reversible transformation between them in a topological toggle switch mechanism. Our atomistic spin dynamics simulations and wide-field Kerr microscopy measurements show that different textures can be generated via high-intense laser pulses within the picosecond regime. The phase transformation between the different topological spin textures is obtained as additional laser pulses are applied to the system where the polarisation and final state of the spins can be controlled by external magnetic fields. Our results indicate laser-driven spin textures on 2D magnets as a pathway towards reconfigurable topological architectures at the atomistic level. Van der Waals magnetic materials, which maintain their magnetic ordering down to a monolayer have been found to host a variety of spin textures, including topological spin textures such as skyrmions. Here, Khela et al. demonstrate laser induced topological switching, between skyrmions, anti-skyrmions and stripe domains in CrGeTe3.
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影响因子：
16.6
作者：
通讯作者：
--
影响因子：
17.1
作者：
Aiello, Clarice D.;Abendroth, John M.;Abbas, Muneer;Afanasev, Andrei;Agarwal, Shivang;Banerjee, Amartya S.;Beratan, David N.;Belling, Jason N.;Berche, Bertrand;Botana, Antia;Caram, Justin R.;Celardo, Giuseppe Luca;Cuniberti, Gianaurelio;Garcia-Etxarri, Aitzol;Dianat, Arezoo;Diez-Perez, Ismael;Guo, Yuqi;Gutierrez, Rafael;Herrmann, Carmen;Hihath, Joshua;Kale, Suneet;Kurian, Philip;Lai, Ying-Cheng;Liu, Tianhan;Lopez, Alexander;Medina, Ernesto;Mujica, Vladimiro;Naaman, Ron;Noormandipour, Mohammadreza;Palma, Julio L.;Paltiel, Yossi;Petuskey, William;Ribeiro-Silva, Joao Carlos;Saenz, Juan Jose;Santos, Elton J. G.;Solyanik-Gorgone, Maria;Sorger, Volker J.;Stemer, Dominik M.;Ugalde, Jesus M.;Valdes-Curiel, Ana;Varela, Solmar;Waldeck, David H.;Wasielewski, Michael R.;Weiss, Paul S.;Zacharias, Helmut;Wang, Qing Hua
通讯作者：
Wang, Qing Hua
影响因子：
15
作者：
Dai, Yanan;Zhou, Zhikang;Petek, Hrvoje
通讯作者：
Petek, Hrvoje
影响因子：
41.2
作者：
Buettner, Felix;Pfau, Bastian;Eisebitt, Stefan
通讯作者：
Eisebitt, Stefan
原子薄 Fe5GeTe2 中的层相关磁畴
影响因子：
17.1
作者：
Fujita, Ryuji;Bassirian, Pedram;Li, Zhengxian;Guo, Yanfeng;Mawass, Mohamad A.;Kronast, Florian;van der Laan, Gerrit;Hesjedal, Thorsten
通讯作者：
Hesjedal, Thorsten