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Mesoscopic charge relaxation

López, Rosa
Published in Physical Review Letters. 2006, vol. 97, no. 206804, p. 4
Abstract We consider charge relaxation in the mesoscopic equivalent of an RC circuit. For a single-channel, spin-polarized contact, self-consistent scattering theory predicts a universal charge relaxation resistance equal to half a resistance quantum independent of the transmission properties of the contact. This prediction is in good agreement with recent experimental results. We use a tunneling Hamiltonian formalism and show in Hartree-Fock approximation that at zero temperature the charge relaxation resistance is universal even in the presence of Coulomb blockade effects. We explore departures from universality as a function of temperature and magnetic field.
Keywords Mesoscopic systems and quantum hall effectCondensed matter
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NIGG, Simon, LÓPEZ, Rosa, BUTTIKER, Markus. Mesoscopic charge relaxation. In: Physical Review Letters, 2006, vol. 97, n° 206804, p. 4. https://archive-ouverte.unige.ch/unige:4189

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Deposited on : 2009-11-30

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