Giant microwave absorption in s- and d- wave superconductors
| Autor: | Boris Spivak, Michael S. Smith, Anton Andreev |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Physics
Superconductivity Condensed matter physics 010308 nuclear & particles physics Supercurrent General Physics and Astronomy Conductivity 01 natural sciences Orders of magnitude (time) Condensed Matter::Superconductivity 0103 physical sciences Quasiparticle 010306 general physics Absorption (electromagnetic radiation) Particle density Microwave |
| Zdroj: | Annals of Physics. 417:168105 |
| ISSN: | 0003-4916 |
| DOI: | 10.1016/j.aop.2020.168105 |
| Popis: | We discuss a new mechanism of microwave absorption in s - and d -wave superconductors, which arises in the presence of a dc supercurrent in the system. It produces a contribution to the ac conductivity that is proportional to the inelastic quasiparticle relaxation time. This contribution also determines the supercurrent dependence of the conductivity. It may significantly exceed the conventional contribution because in typical superconductors the inelastic relaxation time is several orders of magnitude longer than the elastic one. We show that the aforementioned contribution to the conductivity may be expressed in terms of the single particle density of states in superconductors in the presence of a dc supercurrent. Our results may enable determination of the inelastic relaxation time in superconductors from microwave absorption measurements. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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