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 $\left|\Delta \right|$ and the dependence of the spectral functions both on $\left|\Delta \right|$ and the supervelocity $Q$ are the origin of this effect. Our results are opposite to those of Aslamazov and Larkin [Zh. Eks. Teor. Fiz. 70, 1340 (1976)] and Schmid et al. [Phys. Rev. B 21 5076 (1980)] where “cooling” of quasiparticles was found.

• Received 8 February 2011

DOI:https://doi.org/10.1103/PhysRevB.83.224523