Robustness of d-Density Wave Order to Nonmagnetic Impurities

Abstract

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.

arXiv comment4 pages, 3 PostScript figures

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Cited by in corpus (7)

• Key issues in theories of high temperature superconductors
• Self-consistent-field ensembles of disordered Hamiltonians: Efficient solver and application to superconducting films
• Modulation of the local density of states within the $d$-density wave theory in the underdoped cuprates
• Quantum oscillations in electron doped high temperature superconductors
• Observation of electronic bound states in charge-ordered YBa${}_2$Cu${}_3$O${}_y$
• Impurity scattering in unconventional density waves: non-crossing approximation for arbitrary scattering rate
• Pseudogap enhancement due to magnetic impurities in d-density waves