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Topological quantum materials

Published online by Cambridge University Press:  07 May 2020

Kang L. Wang ,
Yingying Wu ,
Christopher Eckberg ,
Gen Yin  and
Quanjun Pan
Kang L. Wang
Affiliation:
Departments of Electrical and Computer Engineering, Physics, and Astronomy, and Materials Science and Engineering, University of California, Los Angeles, USA; wang@ee.ucla.edu
Yingying Wu
Affiliation:
Department of Electrical and Computer Engineering, University of California, Los Angeles, USA; yingyingwu@g.ucla.edu
Christopher Eckberg
Affiliation:
US Army Research Laboratory, and University of California, Los Angeles, USA; eckbergc@umd.edu
Gen Yin
Affiliation:
Department of Electrical and Computer Engineering, University of California, Los Angeles, USA; genyin@g.ucla.edu
Quanjun Pan
Affiliation:
Department of Electrical and Computer Engineering, University of California, Los Angeles, USA; aaronpan@ucla.edu
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Abstract

Topological quantum materials are a class of compounds featuring electronic band structures, which are topologically distinct from common metals and insulators. These materials have emerged as exceptionally fertile ground for materials science research. The topologically nontrivial electronic structures of these materials support many interesting properties, ranging from the topologically protected states, manifesting as high mobility and spin-momentum locking, to various quantum Hall effects, axionic physics, and Majorana modes. In this article, we describe different topological matters, including topological insulators, Weyl semimetals, twisted graphene, and related two-dimensional Chern magnetic insulators, as well as their heterostructures. We focus on recent materials discoveries and experimental advancements of topological materials, and their heterostructures. Finally, we conclude with prospects for the discovery of additional topological materials for studying quantum processes, quasiparticles and their composites, as well as exploiting potential applications of these materials.

Type
Emergent Quantum Materials
Information
MRS Bulletin , Volume 45 , Issue 5: Emergent Quantum Materials , May 2020 , pp. 373 - 379
Copyright
Copyright © Materials Research Society 2020

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