Odd-frequency superconductivity revealed by thermopower

Sun-Yong Hwang, Pablo Burset Atienza, Björn Sothmann

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

16 Sitaatiot (Scopus)
253 Lataukset (Pure)

Abstrakti

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.
AlkuperäiskieliEnglanti
Artikkeli161408
Sivut1-5
JulkaisuPhysical Review B
Vuosikerta98
Numero16
DOI - pysyväislinkit
TilaJulkaistu - 24 lokak. 2018
OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

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