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Cooper pairs in a two-orbital superconductor: Bands filling effect on pair sizes
KTH, School of Engineering Sciences (SCI), Physics. University of Tartu, Estonia.
2017 (English)In: Journal of Physics, Conference Series, ISSN 1742-6588, E-ISSN 1742-6596, Vol. 833, no 1, 012017Article in journal (Refereed) Published
Abstract [en]

The two-orbital superconducting state is modeled by on-site intra-orbital negative-U Hubbard correlations together with inter-orbital pair-transfer interactions. The influence of bands filling on the temperature dependencies of the sizes of Cooper pairs in different orbitals is analyzed. It is found that the sizes exhibit unconventionally strong variation in the temperature scale for occupations favouring interband proximity effect.

Place, publisher, year, edition, pages
Institute of Physics Publishing (IOPP), 2017. Vol. 833, no 1, 012017
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-209624DOI: 10.1088/1742-6596/833/1/012017Scopus ID: 2-s2.0-85020069699OAI: oai:DiVA.org:kth-209624DiVA: diva2:1113800
Conference
23rd International Symposium on the Jahn-Teller Effect: Vibronic Coupling and Electron-Phonon Interaction in Molecules and Crystals 2016, Tartu, Estonia, 27 August 2016 through 1 September 2016
Note

QC 20170622

Available from: 2017-06-22 Created: 2017-06-22 Last updated: 2017-06-22Bibliographically approved

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CiteExportLink to record
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