Figure 2: NbAs magnetic anomaly.
From: Magnetic torque anomaly in the quantum limit of Weyl semimetals
(a) Angle dependence of the torque in high magnetic fields at 4 K, tilting the field from the c-direction (0°) towards the a-direction (90°). A clear break in slope at the quantum limit is observed in all traces up to 65°. (b) The quantum limit as a function of field angle was determined by low-field Shubnikov-de Haas oscillations. The oscillations contain a large harmonic contribution, leading to pronounced higher harmonics in the FFT spectrum. (c) The quantum limit tracks well the torque anomaly at all angles where it is experimentally accessible.
