空中骑兵
自旋电子学
凝聚态物理
点反射
物理
磁铁
格子(音乐)
磁场
铁磁性
量子力学
声学
作者
Yuelin Zhang,Haibo Liu,Yongqi Dong,Shizhe Wu,Jianyu Zhang,Jie Wang,Jingdi Lu,Andreas Rückriegel,Hanchen Wang,R. A. Duine,Haiming Yu,Zhenlin Luo,Ka Shen,Jinxing Zhang
标识
DOI:10.1103/physrevlett.127.117204
摘要
Dzyaloshinskii-Moriya interaction in magnets, which is usually derived from inversion symmetry breaking at interfaces or in noncentrosymmetric crystals, plays a vital role in chiral spintronics. Here we report that an emergent Dzyaloshinskii-Moriya interaction can be achieved in a centrosymmetric material, ${\mathrm{La}}_{0.67}{\mathrm{Sr}}_{0.33}{\mathrm{MnO}}_{3}$, by a graded strain. This strain-driven Dzyaloshinskii-Moriya interaction not only exhibits distinctive two coexisting nonreciprocities of spin-wave propagation in one system, but also brings about a robust room-temperature magnetic skyrmion lattice as well as a spiral lattice at zero magnetic field. Our results demonstrate the feasibility of investigating chiral spintronics in a large category of centrosymmetric magnetic materials.
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