Dynamical Layer Decoupling in a Stripe-Ordered high-T(c) Superconductor

Phys Rev Lett. 2007 Sep 21;99(12):127003. doi: 10.1103/PhysRevLett.99.127003. Epub 2007 Sep 19.

Abstract

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 nonzero 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(x)CuO(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.