Quantum opening of the Coulomb gap in two dimensions

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dc.creatorBenenti, Giuliano
dc.creatorWaintal, Xavier
dc.creatorPichard, Jean-Louis
dc.creatorShepelyansky, Dima L.
dc.date1999-03-22
dc.date1999-06-25
dc.date.accessioned2026-07-07T03:13:06Z
dc.date.available2026-07-07T03:13:06Z
dc.descriptionFor a constant density of spinless fermions in strongly disordered two dimensional clusters, the energy level spacing between the ground state and the first excitation is studied for increasing system sizes. The average indicates a smooth opening of the gap when the Coulomb energy to Fermi energy ratio $r_s$ increases from 0 to 3, while the distribution exhibits a sharp Poisson-Wigner-like transition at $r_s \approx 1$. The results are related to the transition from Mott to Efros-Shklovskii hopping conductivity recently observed at a similar ratio $r_s$.
dc.descriptionrevtex, 4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/9903339
dc.identifierhttp://arxiv.org/abs/cond-mat/9903339
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/29167
dc.subjectCondensed Matter
dc.titleQuantum opening of the Coulomb gap in two dimensions
dc.typetext

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