Spin-torque resonance due to diffusive dynamics at the surface of a topological insulator

Sokolewicz R. J.; Ado I. A.; Katsnelson M. I; Ostrovsky P. M.; Titov M.

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Spin-torque resonance due to diffusive dynamics at the surface of a topological insulator

机译：由于拓扑绝缘体表面的扩散动力学而产生的自旋转矩共振

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We investigate spin-orbit torques on magnetization in an insulating ferromagnetic layer that is brought into close proximity to a topological insulator (TI). In addition to the well-known fieldlike spin-orbit torque, we identify an anisotropic anti-damping-like spin-orbit torque that originates in a diffusive motion of conduction electrons. This diffusive torque is vanishing in the limit of zero momentum (i.e., for a spatially homogeneous electric field or current), but it may, nevertheless, have a strong impact on spin-torque resonance at finite frequency provided the external field is neither parallel nor perpendicular to the TI surface. The required electric-field configuration can be created by a grated top gate.

机译：我们研究了在绝缘铁磁层中磁化过程中的自旋轨道转矩，该铁磁层非常靠近拓扑绝缘体（TI）。除了众所周知的类似场的自旋轨道转矩外，我们还确定了一种各向异性的反阻尼类自旋轨道转矩，其起源于传导电子的扩散运动。该扩散扭矩在零动量的极限内消失（即，对于空间均匀的电场或电流），但是，如果外部磁场既不平行也不平行，则它可能会对有限频率下的自旋扭矩共振产生强烈影响。垂直于TI表面。所需的电场配置可以由磨碎的顶栅产生。

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《Physical review》 |2019年第21期|214444.1-214444.9|共9页
作者
Sokolewicz R. J.; Ado I. A.; Katsnelson M. I; Ostrovsky P. M.; Titov M.;
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Radboud Univ Nijmegen, Inst Mol & Mat, NL-6525 AJ Nijmegen, Netherlands;

Radboud Univ Nijmegen, Inst Mol & Mat, NL-6525 AJ Nijmegen, Netherlands;

Radboud Univ Nijmegen, Inst Mol & Mat, NL-6525 AJ Nijmegen, Netherlands|Ural Fed Univ, Theoret Phys & Appl Math Dept, Mira Str 19, Ekaterinburg 620002, Russia;

Max Planck Inst Solid State Res, Heisenbergstr 1, D-70569 Stuttgart, Germany|RAS, LD Landau Inst Theoret Phys, Moscow 119334, Russia;

Radboud Univ Nijmegen, Inst Mol & Mat, NL-6525 AJ Nijmegen, Netherlands|ITMO Univ, St Petersburg 197101, Russia;

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1. Spin-torque resonance due to diffusive dynamics at the surface of a topological insulator [J] . Sokolewicz R. J., Ado I. A., Katsnelson M. I, Physical review . 2019,第21期

机译：由于拓扑绝缘体表面的扩散动力学，旋转扭矩共振
2. Spin-torque resonance due to diffusive dynamics at the surface of a topological insulator [J] . Sokolewicz R. J., Ado I. A., Katsnelson M. I, Physical review, B . 2019,第21期

机译：由于拓扑绝缘体表面的扩散动力学，旋转扭矩共振
3. Topological charge pumping effect by the magnetization dynamics on the surface of three-dimensional topological insulators [J] . Hiroaki T. Ueda, Akihito Takeuchi, Gen Tatara, Physical review . 2012,第11期

机译：三维拓扑绝缘子表面上的磁化动力学对拓扑电荷的抽运效应
4. Momentum space view of the ultrafast dynamics of surface photocurrents on topological insulators [C] . K. Kuroda, J. Reimann, J. Guedde, Ultrafast phenomena and nanophotonics XXI . 2017

机译：拓扑绝缘体上表面光电流的超快速动力学的动量空间视图
5. Exotic surface states of topological insulators and topological superconductors - quasiparticle scattering in the surface of 3d topological insulators and realization of majorana fermions. [D] . Zhou, Xiaoting. 2013

机译：拓扑绝缘子和拓扑超导体的外来表面状态-3d拓扑绝缘子表面中的准粒子散射和马约拉那费米子的实现。
6. Ballistic geometric resistance resonances in a single surface of a topological insulator [O] . Hubert Maier, Johannes Ziegler, Ralf Fischer, -1

机译：拓扑绝缘体的单个表面中的弹道几何电阻共振
7. Topological charge pumping effect by the magnetization dynamics on the Surface of Three-Dimensional Topological Insulators [O] . Ueda, Hiroaki T., Takeuchi, Akihito, Tatara, Gen, 2012

机译：磁化动力学对拓扑电荷泵浦效应的影响三维拓扑绝缘子的表面

Spin-torque resonance due to diffusive dynamics at the surface of a topological insulator

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