Thermodynamic signatures for the existence of Dirac electrons in ZrTe5

Nair, Nityan L.; Dumitrescu, Philipp T.; Channa, Sanyum; Griffin, Sinead M.; Neaton, Jeffrey B.; Potter, Andrew C.; Analytis, James G.

doi:10.1103/PhysRevB.97.041111

Title: Thermodynamic signatures for the existence of Dirac electrons in ZrTe₅

Journal Article · Tue Sep 12 00:00:00 EDT 2017 · Physical Review B

DOI:https://doi.org/10.1103/PhysRevB.97.041111· OSTI ID:1398514

Nair, Nityan L. ^[1]; Dumitrescu, Philipp T. ^[2]; Channa, Sanyum ^[3]; Griffin, Sinead M. ^[4]; Neaton, Jeffrey B. ^[5]; Potter, Andrew C. ^[2]; Analytis, James G. ^[1]

Univ. of California, Berkeley, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division
Univ. of Texas, Austin, TX (United States). Dept. of Physics
Univ. of California, Berkeley, CA (United States). Dept. of Physics
Univ. of California, Berkeley, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Foundry
Univ. of California, Berkeley, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Foundry; Univ. of California, Berkeley, CA (United States). Kavli Energy NanoScience Inst.; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division

We combine transport, magnetization, and torque magnetometry measurements to investigate the electronic structure of ZrTe₅ and its evolution with temperature. At fields beyond the quantum limit, we observe a magnetization reversal from paramagnetic to diamagnetic response, which is characteristic of a Dirac semi-metal. We also observe a strong non-linearity in the magnetization that suggests the presence of additional low-lying carriers from other low-energy bands. Finally, we observe a striking sensitivity of the magnetic reversal to temperature that is not readily explained by simple band-structure models, but may be connected to a temperature dependent Lifshitz transition proposed to exist in this material.

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Research Organization:: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC02-05CH11231; AC02-05-CH11231

OSTI ID:: 1398514

Alternate ID(s):: OSTI ID: 1417698

Journal Information:: Physical Review B, Vol. 97, Issue 4; ISSN 2469-9950

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 14 works

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Cited By (2)

Evidence for a strain-tuned topological phase transition in ZrTe ₅ Mutch, Joshua; Chen, Wei-Chih; Went, Preston Science Advances, Vol. 5, Issue 8 https://doi.org/10.1126/sciadv.aav9771	journal	August 2019
Evidence for a strain tuned topological phase transition in ZrTe5 Mutch, Joshua; Chen, Wei-Chih; Went, Preston arXiv https://doi.org/10.48550/arxiv.1808.07898	text	January 2018

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