On steady-state currents through nano-devices: a scattering-states numerical renormalization group approach to open quantum systems

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dc.creatorAnders, Frithjof B.
dc.date2008-02-04
dc.date2009-01-15
dc.date.accessioned2026-07-07T12:29:21Z
dc.date.available2026-07-07T12:29:21Z
dc.descriptionWe propose a numerical renormalization group (NRG) approach to steady-state currents through nano-devices. A discretization of the scattering-states continuum ensures the correct boundary condition for an open quantum system. We introduce two degenerate Wilson chains for current carrying left and right-moving electrons reflecting time-reversal symmetry in the absence of a finite bias $V$. We employ the time-dependent NRG to evolve the known steady-state density operator for a non-interacting junction into the density operator of the fully interacting nano-device at finite bias. We calculate the temperature dependent current as function of $V$ and applied external magnetic field using a recently developed algorithm for non-equilibrium spectral functions.
dc.description4 pages, 6 figures
dc.identifierhttps://arxiv.org/abs/0802.0371
dc.identifierhttp://arxiv.org/abs/0802.0371
dc.identifierPhys. Rev. Lett. 101, 066804 (2008)
dc.identifierdoi:10.1103/PhysRevLett.101.066804
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/215850
dc.subjectMesoscale and Nanoscale Physics
dc.subjectStrongly Correlated Electrons
dc.titleOn steady-state currents through nano-devices: a scattering-states numerical renormalization group approach to open quantum systems
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