Publication:
Quantum-mechanically induced asymmetry in the phase diagrams of spin-glass systems

dc.contributor.coauthorKaplan, C. Nadir
dc.contributor.departmentDepartment of Physics
dc.contributor.kuauthorBerker, Ahmet Nihat
dc.contributor.schoolcollegeinstituteCollege of Sciences
dc.date.accessioned2024-11-09T12:25:20Z
dc.date.issued2008
dc.description.abstractThe spin-1/2 quantum Heisenberg spin-glass system is studied in all spatial dimensions d by renormalization-group theory. Strongly asymmetric phase diagrams in temperature and antiferromagnetic bond probability p are obtained in dimensions d >= 3. The asymmetry at high temperatures approaching the pure ferromagnetic and antiferromagnetic systems disappears as d is increased. However, the asymmetry at low but finite temperatures remains in all dimensions, with the antiferromagnetic phase receding from the ferromagnetic phase. A finite-temperature second-order phase boundary directly between the ferromagnetic and antiferromagnetic phases occurs in d >= 6, resulting in a new multicritical point. In d=3, 4, 5, a paramagnetic phase reaching zero temperature intervenes asymmetrically between the ferromagnetic and reentrant antiferromagnetic phases. There is no spin-glass phase in any dimension.
dc.description.fulltextYES
dc.description.indexedbyWOS
dc.description.indexedbyScopus
dc.description.indexedbyPubMed
dc.description.issue2
dc.description.openaccessYES
dc.description.publisherscopeInternational
dc.description.sponsoredbyTubitakEuTÜBİTAK
dc.description.sponsorshipScientific and Technological Research Council (Scientific and Technological Research Council of Turkey (TÜBİTAK))
dc.description.sponsorshipAcademy of Sciences of Turkey (Turkish Academy of Sciences (TÜBA))
dc.description.versionPublisher version
dc.description.volume100
dc.identifier.doi10.1103/PhysRevLett.100.027204
dc.identifier.eissn1079-7114
dc.identifier.embargoNO
dc.identifier.filenameinventorynoIR00809
dc.identifier.issn0031-9007
dc.identifier.quartileQ1
dc.identifier.scopus2-s2.0-38349129620
dc.identifier.urihttps://doi.org/10.1103/PhysRevLett.100.027204
dc.identifier.wos252471200079
dc.keywordsRenormalization-group calculations
dc.keywordsHierarchical lattices
dc.keywordsHeisenberg-model
dc.keywordsThermodynamical properties
dc.keywords3 dimensions
dc.keywordsHeat
dc.keywordsAntiferromagnet
dc.language.isoeng
dc.publisherAmerican Physical Society (APS)
dc.relation.ispartofPhysical Review Letters
dc.relation.urihttp://cdm21054.contentdm.oclc.org/cdm/ref/collection/IR/id/812
dc.subjectMultidisciplinary physics
dc.titleQuantum-mechanically induced asymmetry in the phase diagrams of spin-glass systems
dc.typeJournal Article
dspace.entity.typePublication
local.contributor.kuauthorBerker, Ahmet Nihat
local.publication.orgunit1College of Sciences
local.publication.orgunit2Department of Physics
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