Temperature dependence of the topological phase transition of BiTeI from first principles
Véronique Brousseau-Couture, Gabriel Antonius, Michel Côté
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 ${\mathbb{Z}}_{2}$ 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.
Topics & Concepts
Weyl semimetalTopological insulatorPhase diagramSemimetalPhysicsCondensed matter physicsPhase transitionTopological orderTopology (electrical circuits)Phase (matter)Theoretical physicsQuantum phase transitionSpace (punctuation)Geometric phaseCritical phenomenaKondo insulatorThermalTopological Materials and PhenomenaAdvanced Thermoelectric Materials and DevicesChemical and Physical Properties of Materials