Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2006-09-18
Phys. Rev. B 76, 245106 (2007)
Physics
Condensed Matter
Strongly Correlated Electrons
6 pages, published version
Scientific paper
10.1103/PhysRevB.76.245106
We study the influence of strong nonmagnetic disorder on the Ruderman-Kittel-Kasuya-Yosida (RKKY) interactions between diluted magnetic moments in metals. We find that the probability distribution for the RKKY interactions assumes strongly non-Gaussian form featuring long tails. Since such distributions cannot be characterized by its moments, we define a \textit{typical} value of the interaction amplitude, which we find to be exponentially suppressed in presence of Anderson localization. Our results present a plausible and physically transparent picture describing how Anderson localization effectively eliminates the long range nature of the RKKY interactions.
Dobrosavljevic Vlad
Sobota Jonathan A.
Tanaskovic Darko
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