Vortex structure in d-density wave scenario of pseudogap

Details Vortex structure in d-density wave scenario of pseudogap Vortex structure in d-density wave scenario of pseudogap

2003-02-27

arxiv.org/abs/cond-mat/0302560v1

Phys. Rev. B 68, 024513 (2003)

Physics

Condensed Matter

Superconductivity

8 pages, 10 figures

Scientific paper

10.1103/PhysRevB.68.024513

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.

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