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Title: Spin correlations for an Anderson impurity in conventional and unconventional superconductors

Abstract

The authors present a theoretical study of spin-spin correlation function C(r) in a superconductor, where C(r)=; S is an impurity spin operator and s(r) is the conduction electron spin density operator. The authors model the impurity using the Anderson Hamiltonian, and use the U{r_arrow}{infinity}, 1/N expansion to do the calculations. In addition to conventional superconductors, they consider unconventional superconductors, in which the order parameter {Delta}(k) has a lower rotational symmetry, and has vanishing angular average. Of particular interest is the way the behavior of C(r) reflects two length scales, the Kondo length {zeta}{sub K} and the superconducting coherence length, {zeta}{sub 0}, and the way that its behavior is affected by the angular dependence of unconventional gaps.

Authors:
;  [1]
  1. Purdue Univ., West Lafayette, IN (United States)
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
272743
Resource Type:
Journal Article
Journal Name:
Journal of Low Temperature Physics
Additional Journal Information:
Journal Volume: 102; Journal Issue: 3-4; Other Information: PBD: Feb 1996
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; SUPERCONDUCTORS; IMPURITIES; SPIN; CORRELATIONS; KONDO EFFECT; COHERENCE LENGTH

Citation Formats

Kim, Heesang, and Muzikar, P. Spin correlations for an Anderson impurity in conventional and unconventional superconductors. United States: N. p., 1996. Web. doi:10.1007/BF00754662.
Kim, Heesang, & Muzikar, P. Spin correlations for an Anderson impurity in conventional and unconventional superconductors. United States. https://doi.org/10.1007/BF00754662
Kim, Heesang, and Muzikar, P. Thu . "Spin correlations for an Anderson impurity in conventional and unconventional superconductors". United States. https://doi.org/10.1007/BF00754662.
@article{osti_272743,
title = {Spin correlations for an Anderson impurity in conventional and unconventional superconductors},
author = {Kim, Heesang and Muzikar, P},
abstractNote = {The authors present a theoretical study of spin-spin correlation function C(r) in a superconductor, where C(r)=; S is an impurity spin operator and s(r) is the conduction electron spin density operator. The authors model the impurity using the Anderson Hamiltonian, and use the U{r_arrow}{infinity}, 1/N expansion to do the calculations. In addition to conventional superconductors, they consider unconventional superconductors, in which the order parameter {Delta}(k) has a lower rotational symmetry, and has vanishing angular average. Of particular interest is the way the behavior of C(r) reflects two length scales, the Kondo length {zeta}{sub K} and the superconducting coherence length, {zeta}{sub 0}, and the way that its behavior is affected by the angular dependence of unconventional gaps.},
doi = {10.1007/BF00754662},
url = {https://www.osti.gov/biblio/272743}, journal = {Journal of Low Temperature Physics},
number = 3-4,
volume = 102,
place = {United States},
year = {1996},
month = {2}
}