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11 papers · 2 filters
Dynamical Coulomb Blockade and the Derivative Discontinuity of Time-Dependent Density Functional Theory
S. Kurth, G. Stefanucci, E. Khosravi +2
The role of the discontinuity of the exchange-correlation potential of density functional theory is studied in the context of electron transport and shown to be intimately related…
Correlation-induced conductance suppression at level degeneracy in a quantum dot
H. A. Nilsson, O. Karlström, M. Larsson +6
The large, level-dependent g-factors in an InSb nanowire quantum dot allow for the occurrence of a variety of level crossings in the dot. While we observe the standard conductance…
Correlation energy functional and potential from time-dependent exact-exchange theory
Maria Hellgren, Ulf von Barth
In this work we have studied a new functional for the correlation energy obtained from the exact-exchange (EXX) approximation within time-dependent density functional theory (TDDFT…
Entanglement at finite temperatures in the electronic two-particle interferometer
P. Samuelsson, I. Neder, M. Buttiker
In this work we discuss a theory for entanglement generation, characterization and detection in fermionic two-particle interferometers at finite temperature. The motivation for our…
Probing confined phonon modes by transport through a nanowire double quantum dot
C. Weber, A. Fuhrer, C. Fasth +3
Strong radial confinement in semiconductor nanowires leads to modified electronic and phononic energy spectra. We analyze the current response to the interplay between quantum conf…
Temperature Dependence and Screening Models in Quantum Cascade Structure
Rikard Nelander, Andreas Wacker
Different screening models in quantum cascade lasers are compared by calculating the contribution of intra-subband impurity scattering to the optical linewidth as a function of tem…