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arXiv · 2210.16748

Signature of topological band crossing in ferromagnetic Cr1/3NbSe2 epitaxial thin film

Bruno Kenichi Saika·Satoshi Hamao·Yuki Majima·Xiang Huang·Hideki Matsuoka·Satoshi Yoshida·Miho Kitamura·Masato Sakano·Tatsuto Hatanaka·Takuya Nomoto·Motoaki Hirayama·Koji Horiba·Hiroshi Kumigashira·Ryotaro Arita·Yoshihiro Iwasa·Masaki Nakano·Kyoko Ishizaka
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Abstract

In intercalated transition metal dichalcogenides (I-TMDC), transition metal intercalation introduces magnetic phases which in some cases induce topological band crossing. However, evidence of the topological properties remains elusive in such materials. Here we employ angle-resolved photoemission spectroscopy to reveal the band structure of epitaxially grown ferromagnetic Cr1/3NbSe2. Experimental evidence of the Weyl crossing shows Cr1/3NbSe2 to be a topological ferromagnet. This work highlights I-TMDC as platform towards the interplay of magnetic and topological physics in low-dimensional systems.

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Bruno Kenichi Saika, Satoshi Hamao, Yuki Majima, Xiang Huang, Hideki Matsuoka, Satoshi Yoshida, Miho Kitamura, Masato Sakano, Tatsuto Hatanaka, Takuya Nomoto, Motoaki Hirayama, Koji Horiba, Hiroshi Kumigashira, Ryotaro Arita, Yoshihiro Iwasa, Masaki Nakano, Kyoko Ishizaka. 2022-10-30. Signature of topological band crossing in ferromagnetic Cr1/3NbSe2 epitaxial thin film. https://arxiv.org/abs/2210.16748

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