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Crossover from a three-dimensional to purely two-dimensional vortex-glass transition in deoxygenated YBa_(2)Cu_(3)O_(7-δ) thin films

dc.contributor.authorSefrioui, Zouhair
dc.contributor.authorArias Serna, Diego
dc.contributor.authorVillegas, J. E.
dc.contributor.authorVarela Del Arco, María
dc.contributor.authorLópez de la Torre, M. A.
dc.contributor.authorLeón Yebra, Carlos
dc.contributor.authorLoos, G. D.
dc.contributor.authorSantamaría Sánchez-Barriga, Jacobo
dc.date.accessioned2023-06-20T20:08:10Z
dc.date.available2023-06-20T20:08:10Z
dc.date.issued1999-12-01
dc.description© 1999 The American Physical Society. Z.S. gratefully acknowledges financial support from Agencia Española de Cooperación International (AECI). G.D.L. thanks the sabbaticals SA 106/95 SAB1995-0685 to Universidad Complutense and Ministerio de Educación y Cultura. Financial support from CICYT Grant No. MAT94- 0604 is also acknowledged. We thank Professor J. L. Vicent for helpful discussions.
dc.description.abstractCurrent-voltage (I-V) characteristics were used to investigate the response of the vortex-glass (VG) phase transition in high-quality epitaxial YBa_(2)Cu_(3)O_(7-δ) films in magnetic fields up to 7 T. We show that varying the oxygen content, the scaling analysis reveals a crossover from three-dimensional (3D) to a pure 2D VG transition with T_(g) = 0. At small oxygen deficiencies (7-δ = 6.75), the ρ-j curves scale according to the 3D VG model, which cannot be distinguished from a Bose-glass model from a scaling analysis with the magnetic field applied parallel to the c axis. At a lower oxygen content (7-δ = 6.48), the VG phase transition behaves analogous to the highly anisotropic Bi_(2)Sr_(2)CaCu_(2)O_(8) samples, showing a quasi-2D VG transition. For further deoxygenated samples (7-δ = 6.4), the result is consistent with a pure 2D vortex-glass model similar to that observed in the even more anisotropic Tl_(2)Ba_(2)CaCu_(2)O_(8) thin films. The estimated value of the anisotropy in high-quality oxygen-depleted samples is comparable to that of the highly anisotropic superconductors.
dc.description.departmentDepto. de Estructura de la Materia, Física Térmica y Electrónica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipAgencia Española de Cooperación International (AECI)
dc.description.sponsorshipUniversidad Complutense
dc.description.sponsorshipMinisterio de Educación y Cultura
dc.description.sponsorshipCICYT
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/31184
dc.identifier.doi10.1103/PhysRevB.60.15423
dc.identifier.issn1098-0121
dc.identifier.officialurlhttp://dx.doi.org/10.1103/PhysRevB.60.15423
dc.identifier.relatedurlhttp://journals.aps.org/
dc.identifier.urihttps://hdl.handle.net/20.500.14352/59648
dc.issue.number22
dc.journal.titlePhysical review B
dc.language.isoeng
dc.page.final15429
dc.page.initial15423
dc.publisherAmerican Physical Society
dc.relation.projectIDSA 106/95
dc.relation.projectIDSAB1995-0685
dc.relation.projectIDMAT94-0604
dc.rights.accessRightsopen access
dc.subject.cdu537
dc.subject.keywordHigh-temperature superconductors
dc.subject.keywordLattice-melting transition
dc.subject.keywordSolid phase-transition
dc.subject.keywordThermal fluctuations
dc.subject.keywordII superconductors
dc.subject.keywordBoson localization
dc.subject.keywordUniversality
dc.subject.keywordResistivity
dc.subject.keywordTransport
dc.subject.keywordDisorder.
dc.subject.ucmElectricidad
dc.subject.ucmElectrónica (Física)
dc.subject.unesco2202.03 Electricidad
dc.titleCrossover from a three-dimensional to purely two-dimensional vortex-glass transition in deoxygenated YBa_(2)Cu_(3)O_(7-δ) thin films
dc.typejournal article
dc.volume.number60
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