Odd-frequency superconductivity revealed by thermopower
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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2018-10-24
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en
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Physical Review B, Volume 98, issue 16, pp. 1-5
Abstract
Superconductivity is characterized by a nonvanishing superconducting pair amplitude. It has a definite symmetry in spin, momentum, and frequency (time). While the spin and momentum symmetry have been probed experimentally for different classes of superconductivity, the odd-frequency nature of certain superconducting correlations has not been demonstrated yet in a direct way. Here, we propose the thermopower as an unambiguous way to assess odd-frequency superconductivity. This is possible since the thermoelectric coefficient given by Andreev-like processes is only finite in the presence of odd-frequency superconductivity. We illustrate our general findings with a simple example of a superconductor-quantum-dot-ferromagnet hybrid.Description
| openaire: EC/H2020/743884/EU//DiracEntangler
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Hwang, S-Y, Burset Atienza, P & Sothmann, B 2018, ' Odd-frequency superconductivity revealed by thermopower ', Physical Review B, vol. 98, no. 16, 161408, pp. 1-5 . https://doi.org/10.1103/PhysRevB.98.161408