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Type: Artigo de periódico
Title: Spin and charge gaps of the half-filled N-leg Kondo ladders
Author: Xavier, JC
Abstract: In this work, we study N-leg Kondo ladders at half-filling through the density matrix renormalization group. We found nonzero spin and charge gaps for any finite number of legs and Kondo coupling J>0. We also show evidence of the existence of a quantum critical point in the two-dimensional Kondo lattice model, in agreement with previous works. Based on the binding energy of two holes, we did not find evidence of superconductivity in the two-dimensional Kondo lattice model close to half filling.
Country: EUA
Editor: American Physical Soc
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.68.134422
Date Issue: 2003
Appears in Collections:Unicamp - Artigos e Outros Documentos

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