Evidence for a superfluid density in t--J ladders
Condensed Matter
2019-08-16 v1
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.
Keywords
Cite
@article{arxiv.cond-mat/9504018,
title = {Evidence for a superfluid density in t--J ladders},
author = {C. A. Hayward and D. Poilblanc and R. M. Noack and D. J. Scalapino and W. Hanke},
journal= {arXiv preprint arXiv:cond-mat/9504018},
year = {2019}
}
Comments
4 pages, revtex, postscript figs included, submitted to PRL