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arXiv · 2502.06416

Hedgehog-like spin texture in Sb-doped MnBi$_2$Te$_4$

Meng Zeng·Shu Mo·Ke Zhang·Yu-Jie Hao·Yu-Peng Zhu·Xiang-Rui Liu·Cheng Zhang·Ming-Yuan Zhu·Shiv Kumar·Takuma Iwata·Koji Miyamoto·Taichi Okuda·Kenya Shimada·Kenta Kuroda·Xiao-Ming Ma·Chang Liu
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Abstract

We employ spin- and angle-resolved photoemission spectroscopy and circular-dichroism ARPES to systematically investigate the spin texture of Sb-doped MnBi$_2$Te$_4$. Our results display a hedgehog-like spin texture in this system which is signified by reversed-orienting out-of-plane spins at the Dirac gap. Our finding reveals the presence of time-reversal symmetry breaking, implying the possibility for realization of high-temperature quantum anomalous Hall effect.

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Meng Zeng, Shu Mo, Ke Zhang, Yu-Jie Hao, Yu-Peng Zhu, Xiang-Rui Liu, Cheng Zhang, Ming-Yuan Zhu, Shiv Kumar, Takuma Iwata, Koji Miyamoto, Taichi Okuda, Kenya Shimada, Kenta Kuroda, Xiao-Ming Ma, Chang Liu. 2025-02-10. Hedgehog-like spin texture in Sb-doped MnBi$_2$Te$_4$. https://doi.org/10.1103/y9l1-rvtq

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