Piezomagnetic Properties in Altermagnetic MnTe

2023/05/24 by Takuya Aoyama, Aoyama, Takuya, Kenya Ohgushi +1 · 22 citations
Earth and Planetary Sciences · Materials Science · #High-pressure geophysics and materials #Magnetic and transport properties of perovskites and related materials #Shape Memory Alloy Transformations

paper · pdf · doi:10.48550/arxiv.2305.14786

Abstract

We examined the piezomagnetic effect in an antiferromagnet composed of MnTe, which is a candidate material for altermagnetism with a high critical temperature. We observed that the magnetization develops with the application of stress and revealed that the piezomagnetic coefficient Q is 1.38×10^-8 μB/MPa at 300 K. The poling-field dependence of magnetization indicates that the antiferromagnetic domain can be controlled using the piezomagnetic effect. We demonstrate that the piezomagnetic effect is suitable for detecting and controlling the broken time reversal symmetry in altermagnets.

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