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    Quasiparticle resonant states induced by a unitary impurity in a d-wave superconductor

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    PhysRevB.61.8667.pdf (80.46Kb)
    Date
    2000
    Author
    Zhu, JX
    Lee, TK
    Ting, CS
    Hu, Chia-Ren.
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    Abstract
    The quasiparticle resonant states around a single nonmagnetic impurity with unitary scattering in a d-wave superconductor is studied by solving the Bogoliubov-de Gennes equations based on a t-J model. Both the spatial variation of the order parameter and the local density of states (LDOS) around the impurity have been investigated. We find that (i) a particle-hole symmetric system has a single symmetric zero-energy peak in the LDOS regardless of the size of the superconducting coherence length xi(0); (ii) for the particle-hole asymmetric case, an asymmetric splitting of the zero-energy peak is intrinsic to a system with a small value of k(F)xi(0).
    URI
    http://dx.doi.org/10.1103/PhysRevB.61.8667
    https://hdl.handle.net/1969.1/146783
    Description
    Journals published by the American Physical Society can be found at http://journals.aps.org/
    Subject
    BOUND-STATES
    LOCALIZATION
    CONDUCTANCE
    SCATTERING
    Physics
    Department
    Physics and Astronomy
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    Citation
    JX Zhu, TK Lee, CS Ting and Chia-Ren HU. Phys.Rev.B 61 8667-8670 2000."Copyright (2000) by the American Physical Society."

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