Dissipationless BCS dynamics with large branch imbalance

A. Nahum*, E. Bettelheim

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


In many situations a BCS-type superconductor will develop an imbalance between the populations of the holelike and electronlike spectral branches. This imbalance suppresses the gap. It has been noted by Gal'perin that at large imbalance, when the gap is substantially suppressed, an instability develops. The analytic treatment of the system beyond the instability point is complicated by the fact that the Boltzmann approach breaks down. We study the short-time behavior following the instability, in the collisionless regime, using methods developed by Yuzbashyan.

Original languageAmerican English
Article number184510
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number18
StatePublished - 10 Nov 2008


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