Session W11: Theory of Superconductivity in Cuprates II
2:30 PM–5:18 PM, Thursday, March 13, 2008
Morial Convention Center Room: RO9
Sponsoring Unit:
DCMP
Chair: Mohit Randeria, Ohio State University
Abstract ID: BAPS.2008.MAR.W11.5
Abstract: W11.00005 : Stability of inhomogeneous superconducting states in the doped t-J model
3:18 PM–3:30 PM
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Abstract 
Authors:
Manuela Capello
(Laboratoire de Physique Theorique, CNRS, and Universite Paul Sabatier, Toulouse, France)
Didier Poilblanc
(Laboratoire de Physique Theorique, CNRS, and Universite Paul Sabatier, Toulouse, France)
By using Variational quantum Monte Carlo techniques, we have investigated the stability of inhomogeneous RVB superconducting states in the t-J model at doping 1/8. We show that introducing half-filled charge domain walls involves very small energy costs, especially in the presence of tetragonal-lattice distortions [1]. This suggests that spontaneous unidirectional modulations of the hole density and the superconducting order parameter could easily be stabilized in real materials, in the presence of small perturbations. We argue that such a scenario is at play in the recently observed patterns of unidirectional domains in high-T$_c$ superconductors [1]. \newline [1] M. Capello et al. (in preparation). \newline [2] Y. Kohsaka et al. Science 315, 1380 (2007).
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2008.MAR.W11.5