Formation of BixSey phases upon annealing of the topological insulator Bi2Se3: stabilization of in-depth bismuth bilayers

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dc.creatorPedro Henrique Rezende Gonçalves
dc.creatorThaís Chagas Peixoto Silva
dc.creatorVon Braun Nascimento
dc.creatorDiogo Duarte dos Reis
dc.creatorCarolina Parra Gonzalez
dc.creatorMário Sérgio de Carvalho Mazzoni
dc.creatorÂngelo Malachias de Souza
dc.creatorRogério Magalhães Paniago
dc.date.accessioned2023-03-28T18:42:47Z
dc.date.accessioned2025-09-08T23:42:59Z
dc.date.available2023-03-28T18:42:47Z
dc.date.issued2018
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.identifier.doihttps://doi.org/10.1021/acs.jpclett.7b03172
dc.identifier.issn1948-7185
dc.identifier.urihttps://hdl.handle.net/1843/51291
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofThe Journal of Physical Chemistry Letters
dc.rightsAcesso Restrito
dc.subjectDifração
dc.subjectRaios X
dc.subjectMicroscopia de tunelamento de elétrons
dc.subjectTeoria do funcional da densidade
dc.subject.otherX-ray diffraction
dc.subject.otherScanning tunneling microscopy
dc.subject.otherDensity functional theory
dc.titleFormation of BixSey phases upon annealing of the topological insulator Bi2Se3: stabilization of in-depth bismuth bilayers
dc.typeArtigo de periódico
local.citation.epage960
local.citation.spage954
local.citation.volume9
local.description.resumoThe goal of this work is to study transformations that occur upon heating Bi2Se3 to temperatures up to 623 K. X-ray diffraction (XRD) and scanning tunneling microscopy (STM) and spectroscopy (STS) techniques were used in our investigation. XRD was measured following the 00L and 01L truncation rods. These measurements revealed that upon heating there is a coexistence of a major Bi2Se3 phase and other ones that present structures of quintuple-layers intercalated with Bismuth bilayers. STM measurements of the surface of this material showed the presence of large hexagonal BixSey domains embedded in a Bi2Se3 matrix. STS experiments were employed to map the local electronic density of states and characterize the modifications imposed by the presence of the additional phases. Finally, density functional theory (DFT) calculations were performed to support these findings.
local.identifier.orcidhttps://orcid.org/0000-0001-6773-8921
local.identifier.orcidhttps://orcid.org/0000-0001-5688-5985
local.identifier.orcidhttps://orcid.org/0000-0003-0027-6261
local.identifier.orcidhttps://orcid.org/0000-0003-1151-7745
local.identifier.orcidhttps://orcid.org/0000-0003-2710-462X
local.identifier.orcidhttps://orcid.org/0000-0002-8703-4283
local.identifier.orcidhttps://orcid.org/0000-0002-5203-0944
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://pubs.acs.org/doi/10.1021/acs.jpclett.7b03172

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