Rung-rung current correlations on a 2-legt−Jladder

2001/02/09 by D. J. Scalapino, Steven R. White, S. R. White +2 · 5 citations
Engineering · Physics and Astronomy · #Magnetic confinement fusion research #Physics of Superconductivity and Magnetism #Superconducting Materials and Applications #cond-mat.str-el

paper · pdf · doi:10.1103/physrevb.64.100506

10 pages, 2 figures

arxiv created 2001/02/09 · openalex publication_date 2001/08/22 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We report the results of numerical calculations of rung-rung current correlations on a 2-leg t\ensuremath-J ladder with J/t=0.35 for dopings x=0.125 and x=0.19. We find that the amplitude of these correlations decays exponentially. We argue that this can be understood within a bosonization framework in terms of the pinned phase variables associated with a C1SO phase with d_x²\ensuremath-y²-like power law pairing correlations. We point out that coexistence of power law pairing correlations and orbital current correlations in any 2-leg ladder model requires the existence of at least two gapless boson fields.

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