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arXiv · 2507.12946

Magnetic Triple-q State in Antiferromagnetic Monolayer Interfaced with Bismuthene

Chia-Ju Chen·Yu-Tung Lin·Chieh-Lin Lee·Nitin Kumar·Hung-Chin Lee·Yen-Hui Lin·Bo-Yao Wang·Stefan Bluegel·Gustav Bihlmayer·Pin-Jui Hsu
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Abstract

We have successfully fabricated the bismuthene covered Mn monolayer on Ag(111) by evaporating Mn atoms onto (p x root3)-Bi/Ag(111) at room temperature. By using spin-polarized scanning tunneling microscopy (SP-STM), we have resolved the magnetic triple-q (3Q) state. In combination with density-functional theory (DFT) calculations, the 3Q3-like spin texture is the magnetic ground state for the bismuthene covered Mn monolayer/Ag(111). Interestingly, the uniaxial magnetic anisotropy of 3Q3 state triggered by the bismuthene on top of Mn monolayer/Ag(111) has been revealed, which is consistent with the switching of 3Q3up and 3Q3down domains observed by SP-STM measurements with external magnetic fields.

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Chia-Ju Chen, Yu-Tung Lin, Chieh-Lin Lee, Nitin Kumar, Hung-Chin Lee, Yen-Hui Lin, Bo-Yao Wang, Stefan Bluegel, Gustav Bihlmayer, Pin-Jui Hsu. 2025-07-17. Magnetic Triple-q State in Antiferromagnetic Monolayer Interfaced with Bismuthene. https://arxiv.org/abs/2507.12946

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