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arXiv · 1611.08112

Nontrivial Berry phase and type II Dirac transport in layered material PdTe2

Fucong Fei·Xiangyan Bo·Rui Wang·Bin Wu·Juan Jiang·Dongzhi Fu·Ming Gao·Hao Zheng·Yulin Chen·Fengqi Song·Xiangang Wan·Baigeng Wang·Xuefeng Wang·Guanghou Wang
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Abstract

Here we report the evidence of the type II Dirac Fermion in the layered crystal PdTe2. The de Haas-van Alphen oscillations find a small Fermi pocket with a cross section of 0.077nm-2 with a nontrivial Berry phase. First-principal calculations reveal that it is originated from the hole pocket of a tilted Dirac cone. Angle Resolved Photoemission Spectroscopy demonstrates a type II Dirac cone featured dispersion. We also suggest PdTe2 is an improved platform to host the topological superconductors.

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Fucong Fei, Xiangyan Bo, Rui Wang, Bin Wu, Juan Jiang, Dongzhi Fu, Ming Gao, Hao Zheng, Yulin Chen, Fengqi Song, Xiangang Wan, Baigeng Wang, Xuefeng Wang, Guanghou Wang. 2016-11-24. Nontrivial Berry phase and type II Dirac transport in layered material PdTe2. https://doi.org/10.1103/physrevb.96.041201

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