Quantum metric nonlinear spin-orbit torque enhanced by topological bands

Effects manifesting quantum geometry have been a focus of physics research. Here, we reveal that quantum metric plays a crucial role in nonlinear electric spin response, leading to a quantum metric spin–orbit torque. We argue that enhanced quantum metric can occur at band (anti)crossings, so the non...

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Bibliographic Details
Main Authors: Xukun Feng, Weikang Wu, Hui Wang, Weibo Gao, Lay Kee Ang, Y.X. Zhao, Cong Xiao, Shengyuan A. Yang
Format: Article
Language:English
Published: Elsevier 2025-06-01
Series:Materials Today Quantum
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Online Access:http://www.sciencedirect.com/science/article/pii/S2950257825000186
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