Publication:
Coherence length and quantum geometry in a dilute flat-band superconductor

dc.contributor.departmentDepartment of Physics
dc.contributor.kuauthorIşkın, Menderes
dc.contributor.schoolcollegeinstituteCollege of Sciences
dc.date.accessioned2025-03-06T20:59:59Z
dc.date.issued2024
dc.description.abstractTo explore the influence of quantum-geometric effects on the Ginzburg-Landau coherence length in a dilute flat-band superconductor, we adopt a BCS-BEC crossover approach to the multiband pyrochlore-Hubbard model near the critical temperature for superconductivity. Our self-consistent formulation for this three-dimensional lattice benchmarks very well against the so-called zero-temperature coherence length, demonstrating the monotonic decay of the coherence length to zero as the interaction strength increases. Additionally, we show that the effective mass of the many-body bound states (i.e., Cooper pairs) is nearly identical to that of the lowest-lying two-body bound states in the dilute flat-band limit.
dc.description.indexedbyWOS
dc.description.indexedbyScopus
dc.description.publisherscopeInternational
dc.description.sponsoredbyTubitakEuN/A
dc.description.sponsorshipThe author acknowledges funding from U.S. Air Force Office of Scientific Research (AFOSR) Grant No. FA8655-24-1-7391.
dc.identifier.doi10.1103/PhysRevB.110.144505
dc.identifier.eissn2469-9969
dc.identifier.grantnoU.S. Air Force Office of Scientific Research (AFOSR) [FA8655-24-1-7391]
dc.identifier.issn2469-9950
dc.identifier.issue14
dc.identifier.quartileQ2
dc.identifier.scopus2-s2.0-85206844511
dc.identifier.urihttps://doi.org/10.1103/PhysRevB.110.144505
dc.identifier.urihttps://hdl.handle.net/20.500.14288/27824
dc.identifier.volume110
dc.identifier.wos1333792500002
dc.keywordsCoherence length
dc.keywordsQuantum geometry
dc.keywordsFlat-band superconductivity
dc.keywordsDilute superconductors
dc.keywordsElectronic correlations
dc.keywordsSuperconducting phase
dc.keywordsCondensed matter physics
dc.keywordsTopological superconductors
dc.keywordsQuantum materials
dc.keywordsBand structure
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.relation.ispartofPhysical Review B
dc.subjectMaterials science, multidisciplinary
dc.subjectPhysics, applied
dc.subjectPhysics, condensed matter
dc.titleCoherence length and quantum geometry in a dilute flat-band superconductor
dc.typeJournal Article
dspace.entity.typePublication
local.contributor.kuauthorIşkın, Menderes
local.publication.orgunit1College of Sciences
local.publication.orgunit2Department of Physics
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