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arXiv · 2201.05012

Field-Induced Lifshitz Transition in the Magnetic Weyl Semimetal Candidate PrAlSi

Lei Wu·Shengwei Chi·Huakun Zuo·Gang Xu·Lingxiao Zhao·Yongkang Luo·Zengwei Zhu
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Abstract

Lifshitz transition (LT) refers to an abrupt change in the electronic structure and Fermi surface, and is associated to a variety of emergent quantum phenomena. Amongst the LTs observed in known materials, the field-induced LT has been rare and its origin remains elusive. To understand the origin of field-induced LT, it is important to extend the material basis beyond the usual setting of heavy fermion metals. Here, we report on a field-induced LT in PrAlSi, a magnetic Weyl semimetal candidate with localized 4$f$ electrons, through a study of magnetotransport up to 55 T. The quantum oscillation analysis reveals that across a threshold field $B^*\approx$14.5 T the oscillation frequency ($F_1$ = 43 T) is replaced by two new frequencies ($F_2$ = 62 T and $F_3$ = 103 T). Strikingly, the LT occurs well below quantum limit, with obvious temperature-dependent oscillation frequency and field-dependent cyclotron mass. Our work not only enriches the rare examples of field-induced LTs, but also paves the way for further investigation on the interplay among topology, magnetism and electronic correlation.

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Lei Wu, Shengwei Chi, Huakun Zuo, Gang Xu, Lingxiao Zhao, Yongkang Luo, Zengwei Zhu. 2023-01-20. Field-Induced Lifshitz Transition in the Magnetic Weyl Semimetal Candidate PrAlSi. https://doi.org/10.1038/s41535-023-00537-y

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