Pressure-induced topological phase transition in noncentrosymmetric elemental tellurium.

ABSTRACT: Recent progress in understanding the electronic band topology and emergent topological properties encourage us to reconsider the band structure of well-known materials including elemental substances. Controlling such a band topology by external field is of particular interest from both fundamental and technological viewpoints. Here we report possible signatures of the pressure-induced topological phase transition from a semiconductor to a Weyl semimetal in elemental tellurium probed by transport measurements. Pressure variation of the periods of Shubnikov-de Haas oscillations, as well as oscillation phases, shows an anomaly around the pressure theoretically predicted for topological phase transition. This behavior is consistent with the pressure-induced band deformation and resultant band-

SUBMITTER: Ideue T 

PROVIDER: S-EPMC6926023 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature