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Title
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Long-range Coulomb repulsion effect on a charged vortex in high-temperature superconductors with competing **d**-wave and antiferromagnetic orders
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Author
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Abstract
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| Vortex charges in high-temperature superconductor (HTS) are studied by solving the Bogoliubovde Gennes equations based on a model Hamiltonian with antiferromagnetic (AF) and d-wave orders in the presence of the long-range Coulomb repulsion. For a sufficient strength of the AF order, the negative vortex charge is found. A sign change between negative and positive may occur by tuning the long-range Coulomb repulsion strength or the doping parameter. Recent NMR experiments are hopefully understood. We show that the charged vortex can induce a spin-orbit coupling that is important for superconductors with a short coherence length and a large value of the energy gap over the Fermi-level ratio. Fractional flux quanta are possible for HTS. |
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Language
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English
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Source (journal)
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Physical review : B : solid state. - Lancaster, Pa, 1970 - 1978
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Publication
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Lancaster, Pa
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2008
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ISSN
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0556-2805
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DOI
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10.1103/PHYSREVB.78.064505
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Volume/pages
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78
:6
(2008)
, p. 064505,1-064505,5
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ISI
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000259264900084
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Full text (Publisher's DOI)
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Full text (open access)
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