The chiral anomaly and thermopower of Weyl fermions in the half-Heusler GdPtBi

• Published in: Nature materials Vol. 15; no. 11; pp. 1161 - 1165
• Main Authors: Hirschberger, Max, Kushwaha, Satya, Wang, Zhijun, Gibson, Quinn, Liang, Sihang, Belvin, Carina A., Bernevig, B. A., Cava, R. J., Ong, N. P.
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 01.11.2016; Nature Publishing Group
• Subjects: 639/301/119/2792; 639/301/357/918/1052; 639/766/119/2792; 639/766/483/640; Biomaterials; Condensed Matter Physics; Fermions; letter; Magnetic fields; Magnetoresistance; Magnetoresistivity; Materials Science; Metalloids; Nanotechnology; Nodes; Optical and Electronic Materials; Response functions; Thermoelectricity

The half-Heusler GdPtBi is reported to exhibit negative longitudinal magnetoresistance. This is attributed to the chiral anomaly due to the formation of Weyl nodes with an applied magnetic field. The anomaly is also found to suppress the thermopower. The Dirac and Weyl semimetals are unusual materia...