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research
Disorder and superconductivity in doped semiconductor nanotubes
Authors
H. Fukuyama
S. Nishimoto
Y. Ohta
T. Shirakawa
Publication date
1 January 2009
Publisher
Bristol : IOP Publishing Ltd.
Doi
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Abstract
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.JSPS Research Fellowship for Young ScientistsMinistry of Education, Science, Sports and Culture of Japa
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Institutionelles Repositorium der Leibniz Universität Hannover
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Last time updated on 05/08/2017