Lifshitz Transitions Induced by Temperature and Surface Doping in Type-II Weyl Semimetal Candidate Td-WTe2 Academic Article uri icon

abstract

  • Using high resolution angleresolved photoemission spectroscopy, we systematically investigate the electronic structure of TdWTe2, which has attracted substantial research attention due to its diverse and fascinating properties, especially the predicted typeII topological Weyl semimetal (TWS) phase. The observed significant lattice contraction and the fact that our ARPES measurements are well reproduced by our ab initio calculations under reduced lattice constants support the theoretical prediction of a typeII TWS phase in TdWTe2 at temperatures below 10K. We also investigate the evolution of the electronic structure of TdWTe2 and realize twostage Lifshitz transitions induced by temperature regulation and surface modification, respectively. Our results not only shed light on the understanding of the electronic structure of TdWTe2, but also provide a promising method to manipulate the electronic structures and physical properties of the typeII TWS TdXTe2.

published proceedings

  • PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS

author list (cited authors)

  • Zhang, Q., Liu, Z., Sun, Y., Yang, H., Jiang, J., Mo, S., ... Yang, L.

citation count

  • 14

complete list of authors

  • Zhang, Qihang||Liu, Zhongkai||Sun, Yan||Yang, Haifeng||Jiang, Juan||Mo, Sung-Kwan||Hussain, Zahid||Qian, Xiaofeng||Fu, Liang||Yao, Shuhua||Lu, Minghui||Felser, Claudia||Yan, Binghai||Chen, Yulin||Yang, Lexian

publication date

  • December 2017

publisher