Emergence of aligned nontopological and crossed topological spin helices with unconventional spin-orbit manipulation

作者：Hao Yang, Xue Li, Wei Wang, Ning Hao, Ping Zhang, Jiyong Fu · 发表于：Physical review. B./Physical review. B · 年份：2025 · DOI：10.1103/physrevb.111.l241403 · 被引用次数：2 · 研究领域：Quantum and electron transport phenomena、Topological Materials and Phenomena、Magnetic properties of thin films

Multisubband spin-orbit (SO) quantum systems with additional orbital degrees of freedom offer a new avenue for pursuing advanced functionalities in spintronics. The authors unlock here the usual one-way bottleneck in multisubband SO control, uncover the emergence of aligned nontopological and crossed topological (TP) spin helices, and achieve the interconversion between two the distinct phases via $i\phantom{\rule{0}{0ex}}n$ $s\phantom{\rule{0}{0ex}}i\phantom{\rule{0}{0ex}}t\phantom{\rule{0}{0ex}}u$ electrical means. This opens up new possibilities for exploiting robust, electrically switchable spin phases---whether TP or non-TP---for next-generation spintronic applications.