Intrinsic diamagnetism in the Weyl semimetal TaAs
arXiv:1510.08497 · doi:10.1016/j.jmmm.2016.01.100
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.
12 pages, 4 figures
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- Exotic Landau Diamagnetism and Weyl-Fermions Excitations in TaAs Revealed by As NMR and NQR
- Magnetic susceptibility of topological semimetals
- Visualizing higher-fold topology in chiral crystals
- Towards diluted magnetism in TaAs
- Site-dependent Local Spin Susceptibility and Low-energy Excitation in a Weyl Semimetal WTe