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CFN-Colloquium: Heating of quasiparticles driven by oscillations of the order parameter in short superconducting microbridges

CFN-Colloquium: Heating of quasiparticles driven by oscillations of the order parameter in short superconducting microbridges
Venue:

KIT - Campus South - Wolfgang-Gaede-Str. 1
Seminar Room 10.01, Bldg. 30.23 (Physikhochhaus)

Date:

2011.06.28

Speaker:

Dr. D. Yu. Vodolazov
Institute for Physics of Microstructures
Russian Academy of Science, Nizhny Novgorod

Time:

17:15

We predict 'heating' of quasiparticles driven by order parameter oscillations in the resistive state of short superconducting microbridges. The finite relaxation time of the magnitude of the order parameter D and the dependence of the spectral functions both on D and the supervelocity Q are the origin of this effect. Our result is opposite to those of Aslamazov and Larkin (Zh. Eks. Teor. Fiz. 70, 1340 (1976)) and Schmid, Schön and Tinkham (Phys. Rev. B 21 5076 (1980)) where 'cooling' of quasiparticles was found.