Browsing by Author/Contributor "Di Ventra, Massimiliano"

Now showing items 1-4 of 4

  • Dynamical Corrections to the DFT-LDA Electron Conductance in Nanoscale Systems 

    Sai, Na; Zwolak, Michael; Vignale, Giovanni, 1957-; Di Ventra, Massimiliano (American Physical Society, 2005)
    Using time-dependent current-density functional theory, we derive analytically the dynamical exchange-correlation correction to the dc conductance of nanoscale junctions. The correction pertains to the conductance calculated ...

  • Electronic viscosity in a quantum well: A test for the local-density approximation 

    D'Agosta, Roberto; Di Ventra, Massimiliano; Vignale, Giovanni, 1957- (American Physical Society, 2007)
    In the local-density approximation (LDA) for electronic time-dependent current-density-functional theory, many-body effects are described in terms of the viscoelastic constants of the homogeneous three-dimensional electron ...

  • Incompleteness of the Landauer formula for electronic transport 

    Vignale, Giovanni, 1957-; Di Ventra, Massimiliano (American Physical Society, 2009)
    We show that the Landauer formula for the conductance of a nanoscale system is incomplete because it does not take into account many-body effects which cannot be treated as contributions to the single-particle transmission ...

  • Viscous corrections to the resistance of nano-junctions: a dispersion relation approach 

    Roy, Dibyendu; Vignale, Giovanni, 1957-; Di Ventra, Massimiliano (arXiv, 2011)
    It is well known that the viscosity of a homogeneous electron liquid diverges in the limits of zero frequency and zero temperature. A nanojunction breaks translational invariance and necessarily cuts off this divergence. ...