Strain-Driven Dzyaloshinskii-Moriya Interaction for Room-Temperature Magnetic Skyrmions

Yuelin Zhang, Jie Liu, Yongqi Dong, Shizhe Wu, Jianyu Zhang, Jie Wang, Jingdi Lu, Andreas Rückriegel, Hanchen Wang, Rembert Duine, Haiming Yu, Zhenlin Luo, Ka Shen, Jinxing Zhang

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

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, La0.67Sr0.33MnO3, 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.
Original languageEnglish
Article number117204
Pages (from-to)1-7
JournalPhysical Review Letters
Volume127
Issue number11
DOIs
Publication statusPublished - 10 Sept 2021

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