自旋电子学
凝聚态物理
极化率
物理
自旋极化
偶极子
铁磁性
极化(电化学)
自旋(空气动力学)
非线性系统
自旋流
单层
材料科学
量子力学
电子
纳米技术
化学
物理化学
热力学
分子
作者
Cong Xiao,Weikang Wu,Hui Wang,Yue-Xin Huang,Xiaolong Feng,Huiying Liu,Guang‐Yu Guo,Qian Niu,Shengyuan A. Yang
标识
DOI:10.1103/physrevlett.130.166302
摘要
We propose a time-reversal-even spin generation in second order of electric fields, which dominates the current induced spin polarization in a wide class of centrosymmetric nonmagnetic materials, and leads to a novel nonlinear spin-orbit torque in magnets. We reveal a quantum origin of this effect from the momentum space dipole of the anomalous spin polarizability. First-principles calculations predict sizable spin generations in several nonmagnetic hcp metals, in monolayer TiTe_{2}, and in ferromagnetic monolayer MnSe_{2}, which can be detected in experiment. Our work opens up the broad vista of nonlinear spintronics in both nonmagnetic and magnetic systems.
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