 |
Journal articles
Dynamics of quasiparticle trapping in Andreev levels
Abstract : We present a theory describing the trapping of a quasiparticle in a prototypical Josephson junction , a single-channel superconducting weak link. We calculate the trapping and untrapping rates associated to absorption and emission of both photons and phonons. We show that the presence of an electromagnetic mode with frequency smaller than the gap gives rise to a rather abrupt transition between a fast relaxation regime dominated by coupling to photons and a slow relaxation regime dominated by coupling to phonons. This conclusion is illustrated by the analysis of a recent experiment 1 measuring the dynamics of quasiparticle trapping in a superconducting atomic contact coupled to a Josephson junction. With realistic parameters the theory provides a semi-quantitative description of the experimental results.
Cited literature [13 references]
https://hal-cea.archives-ouvertes.fr/cea-01384760
Contributor : Dominique Girard <>
Submitted on : Thursday, October 20, 2016 - 2:51:09 PM
Last modification on : Monday, December 14, 2020 - 5:08:33 PM
Contributor : Dominique Girard <>
Submitted on : Thursday, October 20, 2016 - 2:51:09 PM
Last modification on : Monday, December 14, 2020 - 5:08:33 PM
File
1309.7283v3.pdf
Files produced by the author(s)