# Dynamical layer decoupling in a stripe-ordered, high T_c superconductor

## TL;DR

This paper proposes that in stripe-ordered high-temperature superconductors, the superconducting condensate can occur at a non-zero wave-vector, leading to layer decoupling due to vanishing Josephson coupling, explaining recent experimental observations.

## Contribution

It introduces a theoretical explanation for layer decoupling in stripe-ordered cuprates based on non-zero wave-vector superconductivity and its impact on interlayer coupling.

## Key findings

- Superconducting condensate can occur at non-zero wave-vector in stripe-ordered states.
- Josephson coupling between layers can vanish under certain stripe conditions.
- This explains the observed dynamical layer decoupling in experiments.

## 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 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.