256 citations · 2.6k across the 81 of their papers we have counts for
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Jahn-Teller Distortions and the Supershell Effect in Metal Nanowires
D. F. Urban, J. Bürki, C. -H. Zhang +2
A stability analysis of metal nanowires shows that a Jahn-Teller deformation breaking cylindrical symmetry can be energetically favorable, leading to stable nanowires with elliptic…
Oscillatory non-linear conductance of an interacting quantum wire with an impurity
Fabrizio Dolcini, Hermann Grabert, Ines Safi +1
The nonlinear conductance of a one-dimensional quantum wire adiabatically coupled to Fermi Liquid electron reservoirs is determined in presence of an impurity. We show that electro…
Interplay of Rayleigh and Peierls Instabilities in Metallic Nanowires
D. F. Urban, Hermann Grabert
A quantum-mechanical stability analysis of metallic nanowires within the free-electron model is presented. The stability is determined by an interplay of electron-shell effects, th…
Unrestricted Hartree-Fock for Quantum Dots
Boris Reusch, Hermann Grabert
We present detailed results of Unrestricted Hartree-Fock (UHF) calculations for up to eight electrons in a parabolic quantum dot. The UHF energies are shown to provide rather accur…
Inelastic electron relaxation rates caused by Spin M/2 Kondo Impurities
Georg Goeppert, Hermann Grabert
We study a spin S=M/2--Kondo system coupled to electrons in an arbitrary nonequilibrium situation above Kondo temperature. Coupling to hot electrons leads to an increased inverse l…
Enhancement of Macroscopic Quantum Tunneling by Landau-Zener Transitions
Joachim Ankerhold, Hermann Grabert
Motivated by recent realizations of qubits with a readout by macroscopic quantum tunneling in a Josephson junction, we study the problem of barrier penetration in presence of coupl…
Tunneling Density of States of the Interacting Two-Dimensional Electron Gas
Joerg Rollbuehler, Hermann Grabert
We investigate the influence of electron--electron interactions on the density of states of a ballistic two--dimensional electron gas. The density of states is determined nonpertur…