Vortex structure in d-density wave scenario of pseudogap

Abstract

We investigate the vortex structure assuming the d-density wave scenario of the pseudogap. We discuss the profiles of the order parameters in the vicinity of the vortex, effective vortex charge and the local density of states. We find a pronounced modification of these quantities when compared to a purely superconducting case. Results have been obtained for a clean system as well as in the presence of a nonmagnetic impurity. We show that the competition between superconductivity and the density wave may explain some experimental data recently obtained for high-temperature superconductors. In particular, we show that the d-density wave scenario explains the asymmetry of the gap observed in the vicinity of the vortex core.

8 pages, 10 figures

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• Comparative analysis of tunneling magnetoresistance in low-$T_c$ Nb/AlAlOx/Nb and high-$T_c$ Bi${}_{2-y}$Pb${}_y$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ intrinsic Josephson junctions
• Spin-rotationally symmetric domain flux phases in underdoped cuprates
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• Effects of disorder on the vortex charge
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• Vortex-core spectroscopy of $d$-wave cuprate high-temperature superconductors
• Bogoliubov quasiparticles coupled to the antiferromagnetic spin mode in a vortex core
• Bound states induced by the ferromagnetic dimer in a triangular lattice