Temperature dependence of the topological phase transition of BiTeI from first principles

2020/05/13 by Véronique Brousseau-Couture, Gabriel Antonius, Michel Côté
Materials Science · Physics and Astronomy · #Advanced Thermoelectric Materials and Devices #Chemical and Physical Properties of Materials #Phase diagram #Phase transition #Semimetal #Topological Materials and Phenomena #Topological insulator #Topological order #Topology (electrical circuits) #Weyl semimetal #cond-mat.mtrl-sci

paper · pdf · doi:10.1103/physrevresearch.2.023185

published as Phys. Rev. Research 2 (2020) 023185 · 20 pages, 10 figures, 6 tables

arxiv created 2020/05/13 · openalex publication_date 2020/05/19 · arxiv updated 2020/05/20 · openalex created_date 2020/05/21 · openalex updated_date 2026/08/05

Abstract

This paper investigates the effect of both electron-phonon interaction and thermal expansion on the topological phase transition in BiTeI, which goes from trivial insulator to Weyl semimetal to ℤ₂ topological insulator under hydrostatic pressure. A pressure-temperature topological phase diagram is constructed, revealing that the phase space of the intermediate Weyl semimetal phase is increased by temperature.

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