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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/38460
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dc.contributor.advisor1Rogério Magalhães Paniagopt_BR
dc.contributor.advisor1Latteshttp://lattes.cnpq.br/7447944106455097pt_BR
dc.contributor.advisor-co1Wendell Simões e Silvapt_BR
dc.contributor.referee1Andrés Felipe Santander-Syropt_BR
dc.contributor.referee2Simone Silva Alexandrept_BR
dc.contributor.referee3Carolina Parra Gonzalezpt_BR
dc.contributor.referee4Myriano Henriques de Oliveira Juniorpt_BR
dc.creatorPedro Henrique Rezende Gonçalvespt_BR
dc.creator.Latteshttp://lattes.cnpq.br/2572462775582499pt_BR
dc.date.accessioned2021-10-21T13:19:35Z-
dc.date.available2021-10-21T13:19:35Z-
dc.date.issued2021-06-21-
dc.identifier.urihttp://hdl.handle.net/1843/38460-
dc.description.resumoThe research in topological materials had been an extensive source for prediction and observation of new and exotic phenomena at the condensed matter level. During the last 20 years, a variety of new topological phases of matter had emerged. The most prominent are Topological Insulators and Weyl Semimetals. In this thesis, we used Angle-resolved Photoemission Spectroscopy to characterize the electronic structure of two topological materials: the quaternary topological insulator BiSbSe2.5Te0.5 and the topological Weyl semimetal candidate TaTe4. We reported the realization of a stable quaternary topological insulator, BiSbSe2.5Te0.5, characterized by a positive doping and charge carriers with smaller effective mass when compared with Bi2Se3. About TaTe4, we report a 2D Fermi surface composed by four Dirac/Weyl cones in the surface first Brillouin zone. The electronic structure of these metallic states is compatible with previous findings in the literature, showing a coexistence of CDW and topological features in a 2D Fermi surface.pt_BR
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológicopt_BR
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Geraispt_BR
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorpt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE FÍSICApt_BR
dc.publisher.programPrograma de Pós-Graduação em Físicapt_BR
dc.publisher.initialsUFMGpt_BR
dc.relationPrograma Institucional de Internacionalização – CAPES - PrIntpt_BR
dc.rightsAcesso Abertopt_BR
dc.subjectTopological insulatorspt_BR
dc.subjectWeyl semimetalspt_BR
dc.subjectCharge-density wavespt_BR
dc.subjectAngle-resolved photoemission spectroscopypt_BR
dc.subject.otherEstrutura eletrônicapt_BR
dc.subject.otherSemimetaispt_BR
dc.subject.otherFotoemissãopt_BR
dc.subject.otherOndas de densidade de cargapt_BR
dc.titleElectronic structure of topological materials probed by angle-resolved photoemission spectroscopypt_BR
dc.typeTesept_BR
dc.identifier.orcidhttps://orcid.org/ 0000-0001-6773-8921pt_BR
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