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Phys. Rev. Lett. 99, 127003 (2007) [4 pages]

Dynamical Layer Decoupling in a Stripe-Ordered High-Tc Superconductor

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E. Berg1, E. Fradkin2, E.-A. Kim1, S. A. Kivelson1, V. Oganesyan3, J. M. Tranquada4, and S. C. Zhang1
1Department of Physics, Stanford University, Stanford, California 94305-4060, USA
2Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801-3080, USA
3Department of Physics, Yale University, New Haven, Connecticut 06520-8120, USA
4Brookhaven National Laboratory, Upton, New York 11973-5000, USA

Received 3 April 2007; published 19 September 2007

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 La2-xBaxCuO4, 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.

© 2007 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.99.127003
DOI:
10.1103/PhysRevLett.99.127003
PACS:
74.72.Dn, 74.20.De, 74.25.Fy, 74.25.Ha