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Dependence of the gap-ratio on the Fermi level shift in a Van Hove superconductor

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dc.contributor.authorKaskamalas S.
dc.contributor.authorKrunavakarn B.
dc.contributor.authorYoksan S.
dc.date.accessioned2021-04-05T04:33:23Z
dc.date.available2021-04-05T04:33:23Z
dc.date.issued2000
dc.date.issuedBE2543
dc.description.abstractTo understand the origin of high temperature superconductivity model based on the close proximity of the Fermi level to a quasi-two-dimensional Van Hove Singularity (VHS) in the density of states has been suggested. Here we present our study of the dependence of the zero temperature gap to the critical temperature for s- and d-wave superconductors on the Fermi level shift (δ) from the VHS within the BCS theory. Exact numerical calculations for the s and d gap ratios are carried out and approximate analytic expressions for the ratio are given. We find that the maximum gap ratio occurs at δ = 0, and it decreases symmetrically with increasing δ.
dc.format.mimetypeapplication/pdf
dc.identifier.citationInternational Journal of Modern Physics B. Vol 14, No.19-20 (2000), p.2127-2133
dc.identifier.doi10.1142/s0217979200002387
dc.identifier.issn2179792
dc.identifier.other2-s2.0-0034632455
dc.identifier.urihttps://hdl.handle.net/20.500.14740/7013
dc.rights.holderScopus
dc.subject.otherCalculation
dc.subject.otherConductor
dc.subject.otherConference paper
dc.subject.otherHigh temperature
dc.subject.otherTemperature dependence
dc.subject.otherTheory
dc.titleDependence of the gap-ratio on the Fermi level shift in a Van Hove superconductor
dc.typeConference Paper
dspace.entity.typePublication
swu.datasource.scopushttps://www.scopus.com/inward/record.uri?eid=2-s2.0-0034632455&doi=10.1142%2fs0217979200002387&partnerID=40&md5=4e9007b7d556e2ab04b2741b816ddbc9

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