Artículo
Quantum Phase Transition Between One-channel and Two-channel Kondo Polarons
Fecha de publicación:
10/2013
Editorial:
American Physical Society
Revista:
Physical Review B: Condensed Matter And Materials Physics
ISSN:
1098-0121
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
For a mobile spin-1/2 impurity, coupled antiferromagnetically to a one-dimensional gas of fermions, perturbative ideas have been used to argue in favor of two-channel Kondo behavior of the impurity spin. Here we combine general considerations and extensive numerical simulations to show that the problem displays a novel quantum phase transition between two-channel and one-channel Kondo screening upon increasing the Kondo coupling. We construct a ground-state phase diagram and discuss the various nontrivial crossovers as well as possible experimental realizations.
Palabras clave:
Quantum Impurities
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Articulos(CCT - PATAGONIA NORTE)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Citación
Rincón, Julián ; Garcia, Daniel Julio; Hallberg, Karen Astrid; Vojta, Matthias ; Quantum Phase Transition Between One-channel and Two-channel Kondo Polarons; American Physical Society; Physical Review B: Condensed Matter And Materials Physics; 88; 14; 10-2013; 140407-140411
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