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Effect of Coulomb Interaction and Disorder on Density of States in Conventional Superconductors

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dc.contributor.author Jujo, Takanobu en
dc.date.accessioned 2019-09-09T04:10:24Z en
dc.date.available 2019-09-09T04:10:24Z en
dc.date.issued 2019-09-03 en
dc.identifier.issn 0031-9015 en
dc.identifier.uri http://hdl.handle.net/10061/13376 en
dc.description.abstract The density of states of the disordered s-wave superconductor is calculated perturbatively. The effect of Coulomb interaction on diffusively moving electrons in the normal state has been known before, but in the superconducting state both diffuson and the screened Coulomb interaction are modified. Therefore, the correction to the density of states in the superconducting state exhibits an energy dependence different from that of the normal state. There is a dip structure in the correction part because the interaction has a peak at twice the energy of the superconducting gap. The Coulomb interaction and the superconducting fluctuation cannot be treated separately because the density fluctuation is coupled to the phase fluctuation in the superconducting state. This coupling results in the absence of divergence around the gap edge in the correction part, which suggests the validity of this perturbation calculation. en
dc.language.iso en en
dc.publisher The Physical Society of Japan en
dc.rights ©2019 The Physical Society of Japan ja
dc.rights 出版社許諾条件により、本文は2020年9月3日以降に公開 ja
dc.title Effect of Coulomb Interaction and Disorder on Density of States in Conventional Superconductors en
dc.type.nii Journal Article en
dc.contributor.transcription ジュウジョウ, タカノブ ja
dc.contributor.alternative 重城, 貴信 ja
dc.textversion author en
dc.identifier.abstracturl https://journals.jps.jp/doi/abs/10.7566/JPSJ.88.104701 en
dc.identifier.jtitle Journal of the Physical Society of Japan en
dc.identifier.volume 88 en
dc.identifier.issue 10 en
dc.relation.doi 10.7566/JPSJ.88.104701 en
dc.identifier.NAIST-ID 73293318 en


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