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arXiv · 1510.08497

Intrinsic diamagnetism in the Weyl semimetal TaAs

Yu Liu·Zhilin Li·Liwei Guo·Xiaolong Chen·Ye Yuan·Fang Liu·Slawomir Prucnal·Manfred Helm·Shengqiang Zhou
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Abstract

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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Yu Liu, Zhilin Li, Liwei Guo, Xiaolong Chen, Ye Yuan, Fang Liu, Slawomir Prucnal, Manfred Helm, Shengqiang Zhou. 2016-02-22. Intrinsic diamagnetism in the Weyl semimetal TaAs. https://doi.org/10.1016/j.jmmm.2016.01.100

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