Magnetic-field-dependent quasiparticle energy relaxation in mesoscopic wires
Mesoscale and Nanoscale Physics
2009-11-10 v1
Abstract
In order to find out if magnetic impurities can mediate interactions between quasiparticles in metals, we have measured the effect of a magnetic field B on the energy distribution function f(E) of quasiparticles in two silver wires driven out-of-equilibrium by a bias voltage U. In a sample showing sharp distributions at B=0, no magnetic field effect is found, whereas in the other sample, rounded distributions at low magnetic field get sharper as B is increased, with a characteristic field proportional to U. Comparison is made with recent calculations of the effect of magnetic-impurities-mediated interactions taking into account Kondo physics.
Keywords
Cite
@article{arxiv.cond-mat/0301070,
title = {Magnetic-field-dependent quasiparticle energy relaxation in mesoscopic wires},
author = {A. Anthore and F. Pierre and H. Pothier and D. Esteve},
journal= {arXiv preprint arXiv:cond-mat/0301070},
year = {2009}
}
Comments
4 pages, 3 figures, to be published in Physical Review Letters