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Article: Theoretical prediction of topological insulators in thallium-based III-V-VI2 ternary chalcogenides

TitleTheoretical prediction of topological insulators in thallium-based III-V-VI2 ternary chalcogenides
Authors
Issue Date2010
PublisherInstitute of Physics Publishing Ltd.. The Journal's web site is located at http://iopscience.iop.org/0295-5075
Citation
Epl, 2010, v. 90 n. 3 How to Cite?
Abstract
We predict a new class of three-dimensional topological insulators in thallium-based III-V-VI2 ternary chalcogenides, including TlBiQ 2 and TlSbQ2 (Q=Te, Se and S). These topological insulators have robust and simple surface states consisting of a single Dirac cone at the Γ point. The mechanism for topological insulating behavior is elucidated using both first-principle calculations and effective field theory models. Remarkably, one topological insulator in this class, TlBiTe2, is also a superconductor when doped with p-type carriers. We discuss the possibility that this material could be a topological superconductor. Another material, TlSbS2, is on the border between topological insulator and trivial insulator phases, in which a topological phase transition can be driven by pressure. © 2010 EPLA.
Persistent Identifierhttp://hdl.handle.net/10722/168478
ISSN
2013 Impact Factor: 2.269
ISI Accession Number ID
References

 

Author Affiliations
  1. Institute of Physics Chinese Academy of Sciences
  2. Universität Bremen
  3. Stanford University
  4. Julius-Maximilians-Universität Würzburg
  5. University of California, Santa Barbara
DC FieldValueLanguage
dc.contributor.authorYan, Ben_US
dc.contributor.authorLiu, CXen_US
dc.contributor.authorZhang, HJen_US
dc.contributor.authorYam, CYen_US
dc.contributor.authorQi, XLen_US
dc.contributor.authorFrauenheim, Ten_US
dc.contributor.authorZhang, SCen_US
dc.date.accessioned2012-10-08T03:19:26Z-
dc.date.available2012-10-08T03:19:26Z-
dc.date.issued2010en_US
dc.identifier.citationEpl, 2010, v. 90 n. 3en_US
dc.identifier.issn0295-5075en_US
dc.identifier.urihttp://hdl.handle.net/10722/168478-
dc.description.abstractWe predict a new class of three-dimensional topological insulators in thallium-based III-V-VI2 ternary chalcogenides, including TlBiQ 2 and TlSbQ2 (Q=Te, Se and S). These topological insulators have robust and simple surface states consisting of a single Dirac cone at the Γ point. The mechanism for topological insulating behavior is elucidated using both first-principle calculations and effective field theory models. Remarkably, one topological insulator in this class, TlBiTe2, is also a superconductor when doped with p-type carriers. We discuss the possibility that this material could be a topological superconductor. Another material, TlSbS2, is on the border between topological insulator and trivial insulator phases, in which a topological phase transition can be driven by pressure. © 2010 EPLA.en_US
dc.languageengen_US
dc.publisherInstitute of Physics Publishing Ltd.. The Journal's web site is located at http://iopscience.iop.org/0295-5075en_US
dc.relation.ispartofEPLen_US
dc.titleTheoretical prediction of topological insulators in thallium-based III-V-VI2 ternary chalcogenidesen_US
dc.typeArticleen_US
dc.identifier.emailYam, CY:yamcy@graduate.hku.hken_US
dc.identifier.authorityYam, CY=rp01399en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1209/0295-5075/90/37002en_US
dc.identifier.scopuseid_2-s2.0-77957744543en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77957744543&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume90en_US
dc.identifier.issue3en_US
dc.identifier.isiWOS:000279119100024-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridYan, B=13204668300en_US
dc.identifier.scopusauthoridLiu, CX=26659930800en_US
dc.identifier.scopusauthoridZhang, HJ=7409201004en_US
dc.identifier.scopusauthoridYam, CY=7004032400en_US
dc.identifier.scopusauthoridQi, XL=8250038200en_US
dc.identifier.scopusauthoridFrauenheim, T=7005494448en_US
dc.identifier.scopusauthoridZhang, SC=7409371247en_US

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