A quantum criticality perspective on the charging of narrow quantum-dot levels

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dc.creatorKashcheyevs, V.
dc.creatorKarrasch, C.
dc.creatorHecht, T.
dc.creatorWeichselbaum, A.
dc.creatorMeden, V.
dc.creatorSchiller, A.
dc.date2008-10-14
dc.date2009-03-26
dc.date.accessioned2026-07-07T12:58:21Z
dc.date.available2026-07-07T12:58:21Z
dc.descriptionUnderstanding the charging of exceptionally narrow levels in quantum dots in the presence of interactions remains a challenge within mesoscopic physics. We address this fundamental question in the generic model of a narrow level capacitively coupled to a broad one. Using bosonization we show that for arbitrary capacitive coupling charging can be described by an analogy to the magnetization in the anisotropic Kondo model, featuring a low-energy crossover scale that depends in a power-law fashion on the tunneling amplitude to the level. Explicit analytical expressions for the exponent are derived and confirmed by detailed numerical and functional renormalization-group calculations.
dc.description4+ pages, 3 figures, PRL version
dc.identifierhttps://arxiv.org/abs/0810.2538
dc.identifierhttp://arxiv.org/abs/0810.2538
dc.identifierPhys. Rev. Lett. 102, 136805 (2009)
dc.identifierdoi:10.1103/PhysRevLett.102.136805
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/225214
dc.subjectMesoscale and Nanoscale Physics
dc.subjectStrongly Correlated Electrons
dc.titleA quantum criticality perspective on the charging of narrow quantum-dot levels
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