Influence of the Ge-Sb sublattice atomic composition on the topological electronic properties of Ge2Sb2Te5

I. V. Silkin, Yu M. Koroteev, G. Bihlmayer, E. V. Chulkov

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We present ab initio calculations of an electronic structure and a topological invariant ν0 of the Ge2Sb 2Te5 compound. We have found that in the case of equiatomic composition of Ge/Sb layers the Ge2Sb2Te 5 compound is the topological insulator. The ν0 invariant does not depend on a specific location of Ge and Sb atoms in the mixed layers, and depends only on their concentration. The variation of the concentration in the Ge/Sb layers leads to a change of the topological invariant of the compound.

Original languageEnglish
Pages (from-to)169-172
Number of pages4
JournalApplied Surface Science
Volume267
DOIs
Publication statusPublished - 15 Feb 2013
Externally publishedYes

Fingerprint

Electronic properties
Electronic structure
Atoms
Chemical analysis

Keywords

  • Atomic composition
  • Density functional theory
  • Electronic structure
  • Topological insulator
  • Topological invariant

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

Cite this

Influence of the Ge-Sb sublattice atomic composition on the topological electronic properties of Ge2Sb2Te5. / Silkin, I. V.; Koroteev, Yu M.; Bihlmayer, G.; Chulkov, E. V.

In: Applied Surface Science, Vol. 267, 15.02.2013, p. 169-172.

Research output: Contribution to journalArticle

Silkin, I. V. ; Koroteev, Yu M. ; Bihlmayer, G. ; Chulkov, E. V. / Influence of the Ge-Sb sublattice atomic composition on the topological electronic properties of Ge2Sb2Te5. In: Applied Surface Science. 2013 ; Vol. 267. pp. 169-172.
@article{cad4ad824e9e4502921330e8e90dddbb,
title = "Influence of the Ge-Sb sublattice atomic composition on the topological electronic properties of Ge2Sb2Te5",
abstract = "We present ab initio calculations of an electronic structure and a topological invariant ν0 of the Ge2Sb 2Te5 compound. We have found that in the case of equiatomic composition of Ge/Sb layers the Ge2Sb2Te 5 compound is the topological insulator. The ν0 invariant does not depend on a specific location of Ge and Sb atoms in the mixed layers, and depends only on their concentration. The variation of the concentration in the Ge/Sb layers leads to a change of the topological invariant of the compound.",
keywords = "Atomic composition, Density functional theory, Electronic structure, Topological insulator, Topological invariant",
author = "Silkin, {I. V.} and Koroteev, {Yu M.} and G. Bihlmayer and Chulkov, {E. V.}",
year = "2013",
month = "2",
day = "15",
doi = "10.1016/j.apsusc.2012.09.017",
language = "English",
volume = "267",
pages = "169--172",
journal = "Applied Surface Science",
issn = "0169-4332",
publisher = "Elsevier",

}

TY - JOUR

T1 - Influence of the Ge-Sb sublattice atomic composition on the topological electronic properties of Ge2Sb2Te5

AU - Silkin, I. V.

AU - Koroteev, Yu M.

AU - Bihlmayer, G.

AU - Chulkov, E. V.

PY - 2013/2/15

Y1 - 2013/2/15

N2 - We present ab initio calculations of an electronic structure and a topological invariant ν0 of the Ge2Sb 2Te5 compound. We have found that in the case of equiatomic composition of Ge/Sb layers the Ge2Sb2Te 5 compound is the topological insulator. The ν0 invariant does not depend on a specific location of Ge and Sb atoms in the mixed layers, and depends only on their concentration. The variation of the concentration in the Ge/Sb layers leads to a change of the topological invariant of the compound.

AB - We present ab initio calculations of an electronic structure and a topological invariant ν0 of the Ge2Sb 2Te5 compound. We have found that in the case of equiatomic composition of Ge/Sb layers the Ge2Sb2Te 5 compound is the topological insulator. The ν0 invariant does not depend on a specific location of Ge and Sb atoms in the mixed layers, and depends only on their concentration. The variation of the concentration in the Ge/Sb layers leads to a change of the topological invariant of the compound.

KW - Atomic composition

KW - Density functional theory

KW - Electronic structure

KW - Topological insulator

KW - Topological invariant

UR - http://www.scopus.com/inward/record.url?scp=84873703224&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84873703224&partnerID=8YFLogxK

U2 - 10.1016/j.apsusc.2012.09.017

DO - 10.1016/j.apsusc.2012.09.017

M3 - Article

VL - 267

SP - 169

EP - 172

JO - Applied Surface Science

JF - Applied Surface Science

SN - 0169-4332

ER -