Mean-field renormalization group theory of the t-J model

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buir.advisorYalabık, Cemal
dc.contributor.authorŞen, Cengiz
dc.date.accessioned2016-01-08T18:25:03Z
dc.date.available2016-01-08T18:25:03Z
dc.date.issued2002
dc.departmentDepartment of Physicsen_US
dc.descriptionAnkara : The Department of Physics and the Institute of Engineering and Science of Bilkent University, 2002.en_US
dc.descriptionThesis (Master's) -- Bilkent University, 2002.en_US
dc.descriptionIncludes bibliographical references leaves 54.en_US
dc.description.abstractThe quantum nature of the high temperature superconductivity models makes analytical approaches to these systems almost impossible to implement. In this thesis, a computational study of the one and two dimensional t − J models that combines mean-field treatments with renormalization group techniques will be presented. This allows one to deal with the noncommutations of the operators at two consecutive sites of the lattices on which these models are defined. The resulting phase diagram for the 1D t − J model reveals an antiferromagnetic ground state, which may, upon doping with increasing temperature, show striped formation that is seen in the high-Tc cuprates. The qualitative features of the phase diagram of the 2D case is also presented, which reveals a phase transition between the disordered and antiferomagnetically ordered phases.en_US
dc.description.degreeM.S.en_US
dc.description.statementofresponsibilityŞen, Cengizen_US
dc.format.extentxi, 54 leaves, illustrations, tablesen_US
dc.identifier.urihttp://hdl.handle.net/11693/15819
dc.language.isoEnglishen_US
dc.publisherBilkent Universityen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjecthigh-temperature superconductivityen_US
dc.subjectt − J modelen_US
dc.subjectHubbard modelen_US
dc.subjectrenormalization group theoryen_US
dc.subjectmean-field theoryen_US
dc.subjecthard-spin mean-field theoryen_US
dc.subject.lccQC611.98.H54 S46 2002en_US
dc.subject.lcshHigh temperature superconductivity.en_US
dc.subject.lcshHubbard model.en_US
dc.titleMean-field renormalization group theory of the t-J modelen_US
dc.typeThesisen_US

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