Abstract
Recent spectroscopic observations of a -wave-like gap in stripe-ordered with have led us to critically analyze the anisotropic transport and magnetization properties of this material. The data suggest that concomitant with the spin ordering is an electronic decoupling of the planes. We observe a transition (or crossover) to a state of two-dimensional (2D) fluctuating superconductivity, which eventually reaches a 2D superconducting state below a Berezinskii-Kosterlitz-Thouless transition. Thus, it appears that the stripe order in frustrates three-dimensional superconducting phase order, but is fully compatible with 2D superconductivity and an enhanced .
- Received 13 March 2007
DOI:https://doi.org/10.1103/PhysRevLett.99.067001
©2007 American Physical Society