2003/10/14 by J. C. Xavier · 11 citations
Physics and Astronomy · #Advanced Condensed Matter Physics #Charge (physics) #Condensed matter physics #Density matrix renormalization group #Impurity #Kondo effect #Kondo insulator #Lattice (music) #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Rare-earth and actinide compounds #Renormalization #Renormalization group #Spin (aerodynamics) #Superconductivity #cond-mat.str-el
paper · pdf · open access · doi:10.1103/physrevb.68.134422
published in Physical review. B, Condensed matter 68(13) (American Physical Society) · 4 pages, 1 table, 3 figs
openalex publication_date 2003/10/14 · arxiv created 2004/05/17 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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.