Thermoelectric Signatures of Time-Reversal Symmetry Breaking States in Multiband Superconductors
2016 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 116, no 9, 097002Article in journal (Refereed) PublishedText
We show that superconductors with broken time-reversal symmetry have very specific magnetic and electric responses to inhomogeneous heating. A local heating of such superconductors induces a magnetic field with a profile that is sensitive to the presence of domain walls and crystalline anisotropy of superconducting states. A nonstationary heating process produces an electric field and a charge imbalance in different bands. These effects can be measured and used to distinguish s + is and s + id superconducting states in the candidate materials such as Ba1-xKxFe2As2.
Place, publisher, year, edition, pages
American Physical Society , 2016. Vol. 116, no 9, 097002
IdentifiersURN: urn:nbn:se:kth:diva-184957DOI: 10.1103/PhysRevLett.116.097002ISI: 000371420600011ScopusID: 2-s2.0-84960905810OAI: oai:DiVA.org:kth-184957DiVA: diva2:917813
FunderSwedish Research Council, 642-2013-7837
QC 201604072016-04-072016-04-072016-04-07Bibliographically approved