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Experimentally observable signatures of odd-frequency pairing in multiband superconductors
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA. Los Alamos National Laboratory, United States.
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
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-175919DOI: 10.1103/PhysRevB.92.094517ISI: 000362081300002Scopus ID: 2-s2.0-84943736943OAI: oai:DiVA.org:kth-175919DiVA: diva2:867015
Funder
Wenner-Gren FoundationsSwedish Research CouncilSwedish Foundation for Strategic Research EU, European Research Council, DM-321031
Note

QC 20151104

Available from: 2015-11-04 Created: 2015-10-26 Last updated: 2017-12-01Bibliographically approved

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