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Experimentally observable signatures of odd-frequency pairing in multiband superconductors
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
KTH Royal Inst Technol, Ctr Quantum Mat, NORDITA, SE-10691 Stockholm, Sweden.;Stockholm Univ, SE-10691 Stockholm, Sweden.;Los Alamos Natl Lab, Inst Mat Sci, Los Alamos, NM 87545 USA..
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
2015 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 92, no 9, 094517Article in journal (Refereed) Published
Abstract [en]

We investigate how hybridization (single-quasiparticle scattering) between two superconducting bands induces odd-frequency superconductivity in a multiband superconductor. An explicit derivation of the odd-frequency pairing correlation and its full frequency dependence is given. We also find that the density of states is modified, at higher energies, from the sum of the two BCS spectra to also include additional hybridization gaps with strong coherence peaks when odd-frequency pairing is present. These gaps constitute clear experimentally measurable signatures of odd-frequency pairing in multiband superconductors.

Place, publisher, year, edition, pages
2015. Vol. 92, no 9, 094517
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:uu:diva-265701DOI: 10.1103/PhysRevB.92.094517ISI: 000362081300002OAI: oai:DiVA.org:uu-265701DiVA: diva2:866661
Funder
Wenner-Gren FoundationsSwedish Research CouncilGöran Gustafsson Foundation for promotion of scientific research at Uppala University and Royal Institute of TechnologySwedish Foundation for Strategic Research EU, European Research Council, DM-321031
Available from: 2015-11-03 Created: 2015-11-02 Last updated: 2017-12-01Bibliographically approved

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Komendova, LuciaBlack-Schaffer, Annica M.

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