Stimulated quasiparticles in spin-split superconductors

Pauli Virtanen, T. T. Heikkilä, F. S. Bergeret

Research output: Contribution to journalArticleScientificpeer-review

9 Citations (Scopus)

Abstract

In superconductors spin split by an exchange field, thermal effects are coupled to spin transport. We show how an oscillating electromagnetic field in such systems creates spin imbalance, that can be detected with a spin-polarized probe. The sign and magnitude of the probe signal result from a competition between processes converting field-induced spin energy imbalance to spin imbalance, dominant at low frequencies, and microwave-driven pair breaking at high frequencies. In the presence of spin-flip scattering, we show that ac excitation also leads to multistabilities in the superconducting state.

Original languageEnglish
Article number014512
Pages (from-to)1-7
Number of pages7
JournalPhysical Review B
Volume93
Issue number1
DOIs
Publication statusPublished - 19 Jan 2016
MoE publication typeA1 Journal article-refereed

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    Virtanen, P., Heikkilä, T. T., & Bergeret, F. S. (2016). Stimulated quasiparticles in spin-split superconductors. Physical Review B, 93(1), 1-7. [014512]. https://doi.org/10.1103/PhysRevB.93.014512