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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2006, Volume 83, Issue 6, Pages 284–289
(Mi jetpl1267)
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This article is cited in 29 scientific papers (total in 29 papers)
CONDENSED MATTER
Free Magnetic Moments in Disordered Metals
S. Kettemannab, E. R. Muccioloc a Max Planck Institute for the Physics of Complex Systems, Dresden, Germany
b Institut für Theoretische Physik, Universität Hamburg, 20355 Hamburg, Germany
c Department of Physics, University of Central Florida
Abstract:
The screening of magnetic moments in metals, the Kondo effect, is found to be quenched with a finite probability in the presence of nonmagnetic disorder. Numerical results for a disordered electron system show that the distribution of Kondo temperatures deviates strongly from the result expected from random matrix theory. A pronounced second peak emerges for small Kondo temperatures, showing that the probability that magnetic moments remain unscreened at low temperatures increases with disorder. Analytical calculations, taking into account correlations between eigenfunction intensities yield a finite width for the distribution in the thermodynamic limit. Experimental consequences for disordered mesoscopic metals are discussed.
Received: 23.01.2006 Revised: 13.02.2006
Citation:
S. Kettemann, E. R. Mucciolo, “Free Magnetic Moments in Disordered Metals”, Pis'ma v Zh. Èksper. Teoret. Fiz., 83:6 (2006), 284–289; JETP Letters, 83:6 (2006), 240–245
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https://www.mathnet.ru/eng/jetpl1267 https://www.mathnet.ru/eng/jetpl/v83/i6/p284
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Abstract page: | 221 | Full-text PDF : | 47 | References: | 38 |
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