Superconductivity Induced by Negative Centers

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dc.creatorLitak, G.
dc.creatorPaiva, T.
dc.creatorScalettar, R. T.
dc.creatorHuscroft, C.
dc.creatorSantos, R. R. dos
dc.date2002-06-08
dc.date.accessioned2026-07-07T02:45:47Z
dc.date.available2026-07-07T02:45:47Z
dc.descriptionWe study the effect of random dilution of attraction centers on electron pairing in a generalization of the negative $U$ Hubbard model where the interaction $U_i$, defined on the two dimensional lattice, can be $-|U|$ and 0 with probability $c$ and $1-c$ depending on the lattice site $i$. Using the determinant quantum Monte Carlo approach, we find the critical concentration $c_0$ of negative centers which leads to superconductivity, and show how the evolution of the local density on the two types of sites lends insight into the formation of global phase coherence.
dc.description10 pages, 3 figures, (submitted toPhysica C)
dc.identifierhttps://arxiv.org/abs/cond-mat/0206128
dc.identifierhttp://arxiv.org/abs/cond-mat/0206128
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/19424
dc.subjectSuperconductivity
dc.subjectDisordered Systems and Neural Networks
dc.subjectStrongly Correlated Electrons
dc.titleSuperconductivity Induced by Negative Centers
dc.typetext

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