![[NCTS Physics Research Highlights] Guang-Yu Guo 'Time-Reversal-Even Nonlinear Current Induced Spin Polarization', Phys. Rev. Lett. 130, 166302 (2023)](/uploads/asset/data/644b1e571d41c823237da77f/_NCTS_Physics_Research_Highlights__Guang-Yu_Guo__Time-Reversal-Even_Nonlinear_Current_Induced_Spin_Polarization___Phys._Rev._Lett._130__166302__2023_.png "[NCTS Physics Research Highlights] Guang-Yu Guo 'Time-Reversal-Even Nonlinear Current Induced Spin Polarization', Phys. Rev. Lett. 130, 166302 (2023)")
Time-Reversal-Even Nonlinear Current Induced Spin Polarization
Cong Xiao, Weikang Wu, Hui Wang, Yue-Xin Huang, Xiaolong Feng, Huiying Liu, Guang-Yu Guo*, Qian Niu, and Shengyuan A. Yang
Phys. Rev. Lett. 130, 166302 (2023)
DOI: https://doi.org/10.1103/PhysRevLett.130.166302
中心對稱固體中非線性電流產生自旋極化 Nonlinear Current Induced Spin Polarization in Centrosymmetric Solids
我們在中心對稱非磁性材料中發現了二階電場引起的自旋極化。我們並揭示了這種效應的量子起源，即來自於這些固體中的異常自旋極化率的偶極子。我們的發現開闢了非磁性和磁性材料在非線性自旋電子學中的廣闊前景。
We find a second-order current induced spin polarization (CISP) in centrosymmetric nonmagnetic materials. We reveal a quantum origin of this effect, i.e., due to the dipole of the anomalous spin polarizability present in the solids. Our work opens up a broad vista of nonlinear spintronics in nonmagnetic and magnetic systems.
