Thermoelectric Signatures of Time-Reversal Symmetry Breaking States in Multiband Superconductors
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...
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Veröffentlicht in: | Physical review letters 2016-03, Vol.116 (9), p.097002-097002, Article 097002 |
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Hauptverfasser: | , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | 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 Ba_{1-x}K_{x}Fe_{2}As_{2}. |
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ISSN: | 0031-9007 1079-7114 1079-7114 |
DOI: | 10.1103/physrevlett.116.097002 |