Energy rectification in quantum graded spin chains: analysis of the XXZ model

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dc.creatorLucas Lage Schuab
dc.creatorEmmanuel Araújo Pereira
dc.creatorGabriel Teixeira Landi
dc.date.accessioned2023-08-29T16:18:07Z
dc.date.accessioned2025-09-09T01:13:39Z
dc.date.available2023-08-29T16:18:07Z
dc.date.issued2016
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPESP - Fundação de Amparo à Pesquisa do Estado de São Paulo
dc.identifier.doihttps://doi.org/10.1103/PhysRevE.94.042122
dc.identifier.issn2470-0053
dc.identifier.urihttps://hdl.handle.net/1843/58323
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofPhysical Review E
dc.rightsAcesso Restrito
dc.subjectMecânica quântica estatística
dc.subjectFenômeno de transporte
dc.subject.otherQuantum statistical mechanics
dc.subject.otherTransport phenomena
dc.titleEnergy rectification in quantum graded spin chains: analysis of the XXZ model
dc.typeArtigo de periódico
local.citation.epage042122-10
local.citation.issue4
local.citation.spage042122-1
local.citation.volume94
local.description.resumoIn this work, with focus on the energy-transport properties in quantum, low-dimensional, graded materials, we address the investigation of the energy (and spin) current in XXZ open chains with graded inner structures and driven out of equilibrium by magnetization pumping applied at the ends. We study several types of graded structures in different situations in order to show a ubiquitous occurrence of energy rectification, even for the system under a homogeneous magnetic field. Due to technical difficulties, we carry out the computation for small chains, but we present arguments that indicate the extension of some results to larger systems. Recalling the generic existence of energy rectification in classical, graded materials, which are described by anharmonic chains of oscillators, and recalling also the anharmonicity of these XXZ models, which involve quartic terms in more transparent representation in terms of fermionic creation and annihilation operators, we may say that our results extend the ubiquity of energy rectification occurrence in classical graded materials to the case of quantum systems.
local.identifier.orcidhttps://orcid.org/0000-0003-2402-9644
local.identifier.orcidhttps://orcid.org/0000-0001-8451-9712
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://journals.aps.org/pre/abstract/10.1103/PhysRevE.94.042122

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