Journal
PHYSICAL REVIEW B
Volume 97, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.97.041111
Keywords
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Funding
- Gordon and Betty Moore Foundation's EPiQS Initiative [GBMF4374]
- Office of Naval Research under the Electrical Sensors and Network Research Division Award [N00014-15-2674]
- NSF GRFP [DGE 1106400]
- Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division, of the U.S. Department of Energy [DE-AC02-05-CH11231]
- Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy [DE-AC02-05-CH11231]
- DOE Office of Science User Facility [DE-AC02-05CH11231]
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We combine transport, magnetization, and torque magnetometry measurements to investigate the electronic structure of ZrTe5, a system that is thought to be near a topological phase transition. At fields beyond the quantum limit, we observe a magnetization reversal from paramagnetic to diamagnetic response, which is characteristic of a Dirac semimetal. However, on increasing temperature across a corresponding transport anomaly, all signatures of this Dirac-like nature are completely suppressed, providing the first thermodynamic evidence of a possible topological phase transition in this compound. ZrTe5 may thus provide a rare, experimentally accessible example in which such phase transitions can be studied directly.
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