2021 journal article

Highly stable full Heusler order Cs(Na, K)(2)Bi with diverse topological phases controlled by strain engineering

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, 273.

co-author countries: Iran (Islamic Republic of) 🇮🇷 United States of America 🇺🇸
author keywords: Topological phases; Topological insulator; Weyl semimetal; Spin-orbit coupling; Strain-engineering
Source: Web Of Science
Added: October 26, 2021

We predict the highly stable new full-Heusler order compound Cs(Na, K)2Bi, that can take a diverse set of topological states by strain-engineering. Based on first-principles studies, our findings reveal that the hydrostatic lattice compression, uniaxial compression, and uniaxial tension can transition Cs(Na, K)2Bi to a trivial semiconductor, a normal insulator, a topological insulator, a Weyl semimetal, a Dirac semimetal, and a Nodal Line semimetal. These topological states, induced by various kinds of strain, exhibit a range of interesting optical and electronic transport properties. These results introduce Cs(Na, K)2Bi compounds as promising candidates to make novel topological devices whose properties can be controlled using strain-engineering.