Spatial development of multiple-gap states in nonequilibrium superconductors
Open Access
- 1 February 1985
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 31 (3) , 1334-1337
- https://doi.org/10.1103/physrevb.31.1334
Abstract
We have studied the gap instability in a superconductor under tunneling injection at high voltages by probing the spatial distribution of the phonon emission. A high sensitivity was achieved by using the fountain pressure of superfluid helium for detecting the phonons. Spatial structures were observed at gap depressions as small as 2%. From their spatial development we find that the quasiparticles diffuse into regions where their density is higher.Keywords
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