Transport properties of semimetallic transition metal dichalcogenides

TL;DR

This paper investigates the transport properties of tellurium-based transition metal dichalcogenides, focusing on Weyl and Dirac semimetal phases, to understand their electronic behavior and potential applications.

Contribution

It provides a detailed analysis of the transport characteristics of MoTe2 and PtTe2, highlighting their Weyl and Dirac semimetal states within the transition metal dichalcogenides family.

Findings

MoTe2 exhibits Weyl semimetal behavior.

PtTe2 shows Dirac semimetal characteristics.

Transport properties reveal potential for electronic applications.

Abstract

The Weyl semimetal requires the breaking of either the time-reversal symmetry (TRS) or the lattice inversion symmetry. When the TRS and inversion symmetry coexist, a pair of degenerate Weyl points may exist, leading to the related Dirac semimetal phase. In other words, a Dirac semimetallic state can be regarded as two copies of Weyl semimetal states. In this dissertation, we study tellurium based compounds like the Weyl semimetal candidate MoTe2 and the Dirac semimetal candidate PtTe2 within the transition metal dichalcogenides family.