Upper Critical Field as a Probe for Multiband Superconductivity in Bulk and Interfacial STO
Number of Authors: 2
2015 (English)In: Journal of Superconductivity and Novel Magnetism, ISSN 1557-1939, E-ISSN 1557-1947, Vol. 28, no 8, 2373-2384 p.Article in journal (Refereed) Published
We investigate the temperature dependence of the upper critical field H-c2 as a tool to probe the possible presence of multiband superconductivity at the interface between LaAlO3 and SrTiO3 (LAO/STO). The behaviour of H-c2 can clearly indicate two-band superconductivity through its nontrivial temperature dependence. For the disorder scattering dominated two-dimensional LAO/STO interface, we find a characteristic non-monotonic curvature of the H-c2(T). We also analyse the H-c2 for multiband bulk STO and find similar behaviour.
Place, publisher, year, edition, pages
2015. Vol. 28, no 8, 2373-2384 p.
LaAlO3/SrTiO3, LAO/STO, Upper critical field, Multiband superconductivity
IdentifiersURN: urn:nbn:se:su:diva-119285DOI: 10.1007/s10948-015-3052-3ISI: 000357460600019OAI: oai:DiVA.org:su-119285DiVA: diva2:844320