Disorder and superconductivity in doped semiconductor nanotubes

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Shirakawa, T.; Nishimoto, S.; Ohta, Y.; Fukuyama, H.: Disorder and superconductivity in doped semiconductor nanotubes. In: Journal of Physics: Conference Series 150 (2009), Nr. 5, 52238. DOI: https://doi.org/10.1088/1742-6596/150/5/052238

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Finite-size systems of the one-dimensional attractive Hubbard model with random potential are studied as an effective model for doped semiconductor nanotubes. We calculate the binding energy of Cooper pairs and pair correlation function by the density-matrix renormalization group method. We show that, when the scattering potential is strong, there appears the ground state where Cooper pairs are formed but are localized spatially, with a decay length of pair correlation smaller than the system size. Experimental relevance is discussed. © 2009 IOP Publishing Ltd.
License of this version: CC BY 3.0
Document Type: article
Publishing status: publishedVersion
Issue Date: 2009
Appears in Collections:Fakultät für Mathematik und Physik

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pos. country downloads
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1 image of flag of Germany Germany 21 84.00%
2 image of flag of Russian Federation Russian Federation 1 4.00%
3 image of flag of France France 1 4.00%
4 image of flag of China China 1 4.00%
5 image of flag of Brazil Brazil 1 4.00%

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