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

doi:10.1103/PhysRevB.96.041201

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

Mesoscale and Nanoscale Physics 2017-07-12 v2

Authors: 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

View on arXiv ↗ PDF ↗ DOI ↗

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.

Keywords

type II Dirac fermion PdTe2 nontrivial Berry phase de Haas-van Alphen oscillations tilted Dirac cone angle-resolved photoemission spectroscopy topological superconductor

Cite

@article{arxiv.1611.08112,
  title  = {Nontrivial Berry phase and type II Dirac transport in layered material PdTe2},
  author = {Fucong Fei and Xiangyan Bo and Rui Wang and Bin Wu and Juan Jiang and Dongzhi Fu and Ming Gao and Hao Zheng and Yulin Chen and Fengqi Song and Xiangang Wan and Baigeng Wang and Xuefeng Wang and Guanghou Wang},
  journal= {arXiv preprint arXiv:1611.08112},
  year   = {2017}
}

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

Abstract

Keywords

Cite

Related papers