Magneto-optical evidence of the topological phase transition in (111)-Pb1-xSnxTe

被引：2

作者：

Phuphachong, T. ^{[1
]}

Assaf, B. A. ^{[2
]}

Volobuev, V. V. ^{[3
]}

Bauer, G. ^{[3
]}

Springholz, G. ^{[3
]}

de Vaulchier, L. A. ^{[1
]}

Guldner, Y. ^{[1
]}

机构：

[1] Univ Paris 07, Univ Pierre & Marie Curie, PSL Res Univ, Lab Pierre Aigrain,Ecole Normale Super,CNRS, 24 Rue Lhomond, F-75005 Paris, France

[2] PSL Res Univ, Ecole Normale Super, CNRS, Dept Phys, 24 Rue Lhomond, F-75005 Paris, France

[3] Johannes Kepler Univ Linz, Inst Halbleiter & Festkorperphys, Altenberger Str 69, A-4040 Linz, Austria

来源：

33RD INTERNATIONAL CONFERENCE ON THE PHYSICS OF SEMICONDUCTORS | 2017年 / 864卷

基金：

奥地利科学基金会;

关键词：

D O I：

10.1088/1742-6596/864/1/012038

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Recently, the study of topological crystalline insulators has become of great interest in condensed matter physics. In this work, we present infrared magneto-optical investigation of such novel quantum states in narrow gap rocksalt IV-VI semiconductor Pb1-xSnxTe which exhibits a topological phase transition at a critical value x(c)approximate to 0.40. High-mobility Bi-doped trivial and non-trivial (111)-Pb1-xSnxTe (0 <= x <= 0.56) films grown on BaF2 substrates by MBE were examined at 4.5K and magnetic fields B=0-15T. Massive and massless Dirac fermion models are used to analyze transmission spectra. We are able to determine the band parameters of the bulk and the topological surface states of such material.

引用

页数：4

共 50 条

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