Superconductivuty versus Tunneling in a Doped Antiferromagnetic Ladder
Strongly Correlated Electrons
2016-08-31 v1 Superconductivity
Abstract
The low-energy charge excitations of a doped antiferromagnetic ladder are modeled by a system of interacting spinless fermions that live on the same ladder. A relatively large spin gap is assumed to ``freeze out'' all spin fluctuations. We find that the formation of rung hole pairs coincides with the opening of a single-particle gap for charge excitations along chains and with the absence of coherent tunneling in between chains. We also find that such hole pairs condense into either a crystalline or superconducting state as a function of the binding energy.
Keywords
Cite
@article{arxiv.cond-mat/9903251,
title = {Superconductivuty versus Tunneling in a Doped Antiferromagnetic Ladder},
author = {J. P. Rodriguez},
journal= {arXiv preprint arXiv:cond-mat/9903251},
year = {2016}
}
Comments
15 pgs. in PLAIN TeX, 2 figs. in postscript, to appear in Phys. Rev. B