Landau level splittings, phase transitions, and nonuniform charge distribution in trilayer graphene

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dc.creatorLeonardo Cristiano Campos
dc.creatorThiti Taychatanapat
dc.creatorMaksym Serbyn
dc.creatorKawin Surakitbovorn
dc.creatorKenji Watanabe
dc.creatorTakashi Taniguchi
dc.creatorDmitry A. Abanin
dc.creatorPablo Jarillo-Herrero
dc.date.accessioned2025-02-24T19:03:06Z
dc.date.accessioned2025-09-08T23:11:26Z
dc.date.available2025-02-24T19:03:06Z
dc.date.issued2016
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.identifier.doihttps://doi.org/10.1103/PhysRevLett.117.066601
dc.identifier.issn1079-7114
dc.identifier.urihttps://hdl.handle.net/1843/80375
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofPhysical Review Letters
dc.rightsAcesso Restrito
dc.subjectEfeito quântico de Hall
dc.subjectEstrutura eletrônica
dc.subjectFenômenos mesoscópicos
dc.subject.otherQuantum hall effect
dc.subject.otherTrilayer graphene
dc.subject.otherLandau level splittings
dc.subject.otherElectronic structure
dc.subject.otherMagnetotransport
dc.subject.otherMesoscopics
dc.titleLandau level splittings, phase transitions, and nonuniform charge distribution in trilayer graphene
dc.typeArtigo de periódico
local.citation.issue6
local.citation.volume117
local.description.resumoWe report on magneto-transport studies of dual-gated, Bernal-stacked trilayer graphene (TLG) encapsulated in boron nitride crystals. We observe a quantum Hall effect staircase which indicates a complete lifting of the twelve-fold degeneracy of the zeroth Landau level. As a function of perpendicular electric field, our data exhibits a sequence of phase transitions between all integer quantum Hall states in the filling factor interval −8 < ν < 0. We develop a theoretical model and argue that, in contrast to monolayer and bilayer graphene, the observed Landau level splittings and quantum Hall phase transitions can be understood within a single-particle picture, but imply the presence of a charge density imbalance between the inner and outer layers of TLG, even at charge neutrality and zero transverse electric field. Our results indicate the importance of a previously unaccounted band structure parameter which, together with a more accurate estimate of the other tight-binding parameters, results in a significantly improved determination of the electronic and Landau level structure of TLG.
local.identifier.orcidhttps://orcid.org/0000-0001-6792-7554
local.identifier.orcidhttps://orcid.org/0000-0002-2472-9758
local.identifier.orcidhttps://orcid.org/0000-0002-2399-5827
local.identifier.orcidhttps://orcid.org/0000-0003-3701-8119
local.identifier.orcidhttps://orcid.org/0000-0002-1467-3105
local.identifier.orcidhttps://orcid.org/0000-0002-2461-0271
local.identifier.orcidhttps://orcid.org/0000-0001-8217-8213
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://journals.aps.org/prl/abstract/10.1103/PhysRevLett.117.066601

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