https://doi.org/10.1140/epjb/e2013-40418-3
Regular Article
Mesoscopic fluctuations in the Fermi-liquid regime of the Kondo problem
1 Université Paris-Sud, LPTMS, UMR8626,
91405
Orsay,
France
2 CNRS, 91405
Orsay,
France
3 Department of Physics, Duke
University, Box
90305, Durham,
NC
27708-0305,
USA
4 Université de Bordeaux, LOMA, UMR
5798, 33400
Talence,
France
5 CNRS, LOMA, UMR 5798,
33400
Talence,
France
a
e-mail: denis.ullmo@u-psud.fr
Received:
19
April
2013
Received in final form:
25
June
2013
Published online:
7
August
2013
We consider the low temperature regime of the mesoscopic Kondo problem, and in particular the relevance of a Fermi-liquid description of this regime. Mesoscopic fluctuations of both the quasiparticle energy levels and the corresponding wavefunctions are large in this case. These mesoscopic fluctuations make the traditional approach to Fermi-liquids impracticable, as it assumes the existence of a limited number of relevant parameters. We show here how this difficulty can be overcome and discuss the relationship between the resulting Fermi-liquid description “à la Nozières” and the mean field slave fermion approximation.
Key words: Mesoscopic and Nanoscale Systems
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag, 2013