Cited by 820Topological Materials and PhenomenaAdvanced Condensed Matter Physics2D Materials and Applications

The DOI matches its Crossref record; 31 of the 32 references it cites were found in a registry or an index.

Topological crystalline insulator states in Pb1−xSnxSe

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Abstract

Topological insulators are a class of quantum materials in which time-reversal symmetry, relativistic effects and an inverted band structure result in the occurrence of electronic metallic states on the surfaces of insulating bulk crystals. These helical states exhibit a Dirac-like energy dispersion across the bulk bandgap, and they are topologically protected. Recent theoretical results have suggested the existence of topological crystalline insulators (TCIs), a class of topological insulators in which crystalline symmetry replaces the role of time-reversal symmetry in ensuring topological protection. In this study we show that the narrow-gap semiconductor Pb(1-x)Sn(x)Se is a TCI for x = 0.23. Temperature-dependent angle-resolved photoelectron spectroscopy demonstrates that the material undergoes a temperature-driven topological phase transition from a trivial insulator to a TCI. These experimental findings add a new class to the family of topological insulators, and we anticipate that they will lead to a considerable body of further research as well as detailed studies of topological phase transitions.

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Metadata

Authors
Dziawa, P., Kowalski, B. J., Dybko, K., Buczko, R., Szczerbakow, A., Szot, M., Łusakowska, E., Balasubramanian, T., Wojek, B. M., Berntsen, M. H., Tjernberg, O., & Story, T.
Affiliations
  • Institute of Physics (PL)
  • Lund University (SE)
  • KTH Royal Institute of Technology (SE)
Corresponding author
  • Tjernberg, O.
  • Story, T.
Venue
Nature Materials
Published
2012-09-30
Volume
11
Issue
12
Pages
1023-1027
ISSN
  • 1476-1122 (ISSN-L)
  • 1476-4660
OpenAlex
W1997811253
Cited by
820
References
32
Citations by year
2026: 21 · 2025: 50 · 2024: 37 · 2023: 39 · 2022: 53 · 2021: 61 · 2020: 66 · 2019: 72 · 2018: 88 · 2017: 75 · 2016: 67 · 2015: 79 · 2014: 72 · 2013: 33 · 2012: 7
FWCI
31.61
Type
journal article
Language
en
Open access
Locations
  • Nature Materials (publishedVersion)
  • PubMed (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • Lund University Publications (Lund University) (submittedVersion)
  • arXiv (Cornell University)
Funders
  • European Commission
  • Knut och Alice Wallenbergs Stiftelse
  • Vetenskapsrådet
  • European Regional Development Fund
Topics
  • Physical Sciences › Physics and Astronomy › Condensed Matter Physics › Topological Materials and Phenomena
  • Physical Sciences › Physics and Astronomy › Condensed Matter Physics › Advanced Condensed Matter Physics
  • Physical Sciences › Materials Science › Materials Chemistry › 2D Materials and Applications
Keywords
topological crystalline insulators, Pb1-xSnxSe, crystal symmetry, topological phase transition, narrow-gap semiconductors, topological protection, surface states, angle-resolved photoemission

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