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Evidence for a superfluid density in t--J ladders | | C.A.Hayward
; D.Poilblanc
; R
; M.Noack
; D.J.Scalapino
; W.Hanke
; | | Date: |
5 Apr 1995 | | Subject: | cond-mat | | Affiliation: | Lab. de Physique Quantique, Université Paul Sabatier | | Abstract: | Applying three independent techniques, we give numerical evidence for a finite superfluid density in isotropic hole-doped t--J ladders: We show the existence of anomalous flux quantization, emphasising the contrasting behaviour to that found in the `Luttinger liquid’ regime stabilised at low electron densities; We consider the nature of the low-lying excitation modes, finding the 1-D analog of the superconducting state; And using a density matrix renormalization group approach, we find long range pairing correlations and exponentially decaying spin-spin correlations. | | Source: | arXiv, cond-mat/9504018 | | Services: | Forum | Review | PDF | Favorites | |
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