Strain-Driven Dzyaloshinskii-Moriya Interaction for Room-Temperature Magnetic Skyrmions
Publication date
2021-09-10
Authors
Zhang, Yuelin
Liu, Jie
Dong, Yongqi
Wu, Shizhe
Zhang, Jianyu
Wang, Jie
Lu, Jingdi
Rückriegel, Andreas
Wang, Hanchen
Duine, Rembert A.
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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.
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Zhang, Y, Liu, J, Dong, Y, Wu, S, Zhang, J, Wang, J, Lu, J, Rückriegel, A, Wang, H, Duine, R, Yu, H, Luo, Z, Shen, K & Zhang, J 2021, 'Strain-Driven Dzyaloshinskii-Moriya Interaction for Room-Temperature Magnetic Skyrmions', Physical Review Letters, vol. 127, no. 11, 117204, pp. 1-7. https://doi.org/10.1103/PhysRevLett.127.117204