Robustness of d-Density Wave Order to Nonmagnetic Impurities

Details Robustness of d-Density Wave Order to Nonmagnetic Impurities Robustness of d-Density Wave Order to Nonmagnetic Impurities

2003-06-16

arxiv.org/abs/cond-mat/0306415v1

Phys. Rev. B 69, 224513 (2004)

Physics

Condensed Matter

Superconductivity

4 pages, 3 PostScript figures

Scientific paper

10.1103/PhysRevB.69.224513

Effect of finite density of nonmagnetic impurities on a coexisting phase of d-density wave (DDW) order and d-wave superconducting (DSC) order is studied using Bogoliubov-de Gennes (BdG) method. The spatial variation of the inhomogeneous DDW order due to impurities has a strong correlation with that of density, which is very different from that of DSC order. The length scale associated with DDW is found to be of the order of a lattice spacing. The nontrivial inhomogeneities are shown to make DDW order much more robust to the impurities, while DSC order becomes very sensitive to them. The effect of disorder on the density of states is also discussed.

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