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Phys Rev Lett. 2007 Sep 21;99(12):127003. Epub 2007 Sep 19.

Dynamical layer decoupling in a stripe-ordered high-T(c) superconductor.

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Department of Physics, Stanford University, Stanford, California 94305-4060, USA.


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.

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