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Disordered Kondo nanoclusters: Effect of energy spacing

Verdozzi, Claudio LU ; Kioussis, N and Luo, Y (2004) In Physical Review B 70.
Abstract
Exact-diagonalization results for Kondo nanoclusters alloyed with mixed-valence impurities show that tuning the energy spacing Δ drives the system from the Kondo to the Ruderman-Kittel-Kasuya-Yosida (RKKY) regime. The interplay of Δ and disorder gives rise to a Δ versus concentration T=0 phase diagram very rich in structure. The parity of the total number of electrons alters the competition between the Kondo and RKKY correlations. The local Kondo temperatures TK and RKKY interactions depend strongly on the local environment and overall are enhanced by disorder, in contrast to the hypothesis of “Kondo disorder” single-impurity models.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review B
volume
70
publisher
American Physical Society
external identifiers
  • scopus:42749104904
ISSN
1550-235X
DOI
10.1103/PhysRevB.70.132404
language
English
LU publication?
yes
id
187b4699-3d02-44c5-b938-01037d113854 (old id 921298)
date added to LUP
2008-01-10 17:58:01
date last changed
2017-01-01 07:55:59
@article{187b4699-3d02-44c5-b938-01037d113854,
  abstract     = {Exact-diagonalization results for Kondo nanoclusters alloyed with mixed-valence impurities show that tuning the energy spacing Δ drives the system from the Kondo to the Ruderman-Kittel-Kasuya-Yosida (RKKY) regime. The interplay of Δ and disorder gives rise to a Δ versus concentration T=0 phase diagram very rich in structure. The parity of the total number of electrons alters the competition between the Kondo and RKKY correlations. The local Kondo temperatures TK and RKKY interactions depend strongly on the local environment and overall are enhanced by disorder, in contrast to the hypothesis of “Kondo disorder” single-impurity models.},
  articleno    = {132404},
  author       = {Verdozzi, Claudio and Kioussis, N and Luo, Y},
  issn         = {1550-235X},
  language     = {eng},
  publisher    = {American Physical Society},
  series       = {Physical Review B},
  title        = {Disordered Kondo nanoclusters: Effect of energy spacing},
  url          = {http://dx.doi.org/10.1103/PhysRevB.70.132404},
  volume       = {70},
  year         = {2004},
}