Quantum percolation in granular metals

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dc.creatorFeigel'man, M. V.
dc.creatorIoselevich, A. S.
dc.creatorSkvortsov, M. A.
dc.date2004-04-15
dc.date.accessioned2026-07-07T02:57:38Z
dc.date.available2026-07-07T02:57:38Z
dc.descriptionTheory of quantum corrections to conductivity of granular metal films is developed for the realistic case of large randomly distributed tunnel conductances. Quantum fluctuations of intergrain voltages (at energies E much below bare charging energy scale E_C) suppress the mean conductance \bar{g}(E) much stronger than its standard deviation σ(E). At sufficiently low energies E_* any distribution becomes broad, with σ(E_*) ~ \bar{g}(E_*), leading to strong local fluctuations of the tunneling density of states. Percolative nature of metal-insulator transition is established by combination of analytic and numerical analysis of the matrix renormalization group equations.
dc.description6 pages, 5 figures, REVTeX 4
dc.identifierhttps://arxiv.org/abs/cond-mat/0404350
dc.identifierhttp://arxiv.org/abs/cond-mat/0404350
dc.identifierPhys. Rev. Lett. 93, 136403 (2004)
dc.identifierdoi:10.1103/PhysRevLett.93.136403
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/23743
dc.subjectMesoscale and Nanoscale Physics
dc.subjectDisordered Systems and Neural Networks
dc.titleQuantum percolation in granular metals
dc.typetext

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