Vanishing quantum oscillations in Dirac semimetal ZrTe5

Proceedings of the National Academy of Sciences of the United States of America
Jingyue WangXiaosong Wu

Abstract

One of the characteristics of topological materials is their nontrivial Berry phase. Experimental determination of this phase largely relies on a phase analysis of quantum oscillations. We study the angular dependence of the oscillations in a Dirac material [Formula: see text] and observe a striking spin-zero effect (i.e., vanishing oscillations accompanied with a phase inversion). This indicates that the Berry phase in [Formula: see text] remains nontrivial for arbitrary field direction, in contrast with previous reports. The Zeeman splitting is found to be proportional to the magnetic field based on the condition for the spin-zero effect in a Dirac band. Moreover, it is suggested that the Dirac band in [Formula: see text] is likely transformed into a line node other than Weyl points for the field directions at which the spin zero occurs. The results underline a largely overlooked spin factor when determining the Berry phase from quantum oscillations.

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Citations

Feb 27, 2020·Nature Communications·Wenjie ZhangLiyuan Zhang
Nov 26, 2019·Physical Review Letters·J L ZhangM L Tian
Aug 17, 2020·Physical Review Letters·Y JiangZ Jiang
Feb 12, 2021·Journal of Physics. Condensed Matter : an Institute of Physics Journal·M K HoodaD Samal
Nov 6, 2020·Chemical Reviews·Nitesh KumarClaudia Felser
Jan 27, 2021·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Ji Wu, Chunming Wang
Jul 17, 2021·Proceedings of the National Academy of Sciences of the United States of America·Sang-Eon LeeMyung-Hwa Jung
Oct 2, 2021·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Satyaki Kar, Anupam Saha
Nov 21, 2021·Nature Communications·Jingyue WangZhigang Jiang

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