Electronic properties of SnTe-class topological crystalline insulator materials

doi:10.1088/1674-1056/25/11/117313

Abstract

The rise of topological insulators in recent years has broken new ground both in the conceptual cognition of condensed matter physics and the promising revolution of the electronic devices. It also stimulates the explorations of more topological states of matter. Topological crystalline insulator is a new topological phase, which combines the electronic topology and crystal symmetry together. In this article, we review the recent progress in the studies of SnTe-class topological crystalline insulator materials. Starting from the topological identifications in the aspects of the bulk topology, surface states calculations, and experimental observations, we present the electronic properties of topological crystalline insulators under various perturbations, including native defect, chemical doping, strain, and thickness-dependent confinement effects, and then discuss their unique quantum transport properties, such as valley-selective filtering and helicity-resolved functionalities for Dirac fermions. The rich properties and high tunability make SnTe-class materials promising candidates for novel quantum devices.

Keywords: topological crystalline insulator SnTe surface states mirror symmetry

Received: 19 April 2016
Revised: 11 July 2016
Accepted manuscript online:

PACS:	73.20.At	(Surface states, band structure, electron density of states)
	73.22.-f	(Electronic structure of nanoscale materials and related systems)
	71.20.-b	(Electron density of states and band structure of crystalline solids)
	73.63.-b	(Electronic transport in nanoscale materials and structures)

Fund:

Project supported by the Ministry of Science and Technology of China (Grant No. 2016YFA0301000) and the National Natural Science Foundation of China (Grant No. 11334006).

Corresponding Authors: Wenhui Duan
E-mail: dwh@phys.tsinghua.edu.cn

Cite this article:

Jianfeng Wang(王建峰), Na Wang(王娜), Huaqing Huang(黄华卿), Wenhui Duan(段文晖) Electronic properties of SnTe-class topological crystalline insulator materials 2016 Chin. Phys. B 25 117313

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