Intrinsic diamagnetism in the Weyl semimetal TaAs

arxiv: 1510.08497 · v3 · pith:U6H7BX5Cnew · submitted 2015-10-28 · ❄️ cond-mat.mtrl-sci

Intrinsic diamagnetism in the Weyl semimetal TaAs

Yu Liu , Zhilin Li , Liwei Guo , Xiaolong Chen , Ye Yuan , Fang Liu , Slawomir Prucnal , Manfred Helm

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Shengqiang Zhou

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classification ❄️ cond-mat.mtrl-sci

keywords taasmagneticweyldiamagnetismintrinsicpropertiessemimetaltemperature

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We investigate the magnetic properties of TaAs, a prototype Weyl semimetal. TaAs crystals show weak diamagnetism with magnetic susceptibility of about -7 * 10^{-7} emu/(g*Oe) at 5 K. A general feature is the appearance of a minimum at around 185 K in magnetization measurements as a function of temperature. No phase transition is observed in the temperature range between 5 K and 400 K. The magnetic properties indicate that the intrinsic Fermi level in TaAs is not located at the Weyl nodes, in agreement with the theory prediction.

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Intrinsic diamagnetism in the Weyl semimetal TaAs

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