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Author Chung, W. ♦ Jarrell, M.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ SUPERCONDUCTORS ♦ ENERGY GAP ♦ MAGNETIC MATERIALS ♦ MAGNETIC SUSCEPTIBILITY ♦ IMPURITIES ♦ MONTE CARLO METHOD ♦ KONDO EFFECT ♦ ENTROPY ♦ DILUTE ALLOYS
Abstract We study states in the superconducting gap induced by magnetic impurities using self-consistent quantum Monte Carlo with maximum entropy and formally exact analytic continuation methods. The magnetic impurity susceptibility has different characteristics for {ital T}{sub 0}{approx_lt}{ital T}{sub {ital c}0} and {ital T}{sub 0}{approx_gt}{ital T}{sub {ital c}0} ({ital T}{sub 0}: Kondo temperature, {ital T}{sub {ital c}0}: superconducting transition temperature) due to the crossover between a doublet and a singlet ground state. We systematically study the location and the weight of the gap states and the gap parameter as a function of {ital T}{sub 0}/{ital T}{sub {ital c}0} and the concentration of the impurities. {copyright} {ital 1996 The American Physical Society.}
ISSN 00319007
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-10-01
Publisher Place United States
Journal Physical Review Letters
Volume Number 77
Issue Number 17


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