In the stripe-ordered state of a strongly-correlated two-dimensional electronic system, under a set of special circumstances, the superconducting condensate, like the magnetic order, can occur at a non-zero wave-vector corresponding to a spatial period double that of the charge order. In this case, the Josephson coupling between near neighbor planes, especially in a crystal with the special structure of La_{2-x}Ba_xCuO_4, vanishes identically. We propose that this is the underlying cause of the dynamical decoupling of the layers recently observed in transport measurements at x=1/8.
@article{arxiv.0704.1240,
title = {Dynamical layer decoupling in a stripe-ordered, high T_c superconductor},
author = {Erez Berg and Eduardo Fradkin and Eun-Ah Kim and Steven A. Kivelson and Vadim Oganesyan and John Tranquada and Shoucheng Zhang},
journal= {arXiv preprint arXiv:0704.1240},
year = {2007}
}
Comments
4 pages, 3 figures (one with 3 subfigures); ; new edited version; one new reference (Ref.25); to be published in Physical Review Letters (in press)