256 citations · 1.2k across the 19 of their papers we have counts for
5 papers · 1 filter
Effective charge-spin models for quantum dots
John H. Jefferson, Wolfgang Häusler
It is shown that at low densities, quantum dots with few electrons may be mapped onto effective charge-spin models for the low-energy eigenstates. This is justified by defining a l…
Influence of spin on the persistent current of strongly interacting electrons
Wolfgang Häusler
The lowest eigenenergies of few, strongly interacting electrons in a one--dimensional ring are studied in the presence of an impurity barrier. The persistent current , perio…
Signatures of electron correlations in the transport properties of quantum dots
Kristian Jauregui, Wolfgang Häusler, Dietmar Weinmann +1
The transition matrix elements between the correlated and electron states of a quantum dot are calculated by numerical diagonalization. They are the central ingredien…
Nonlinear Transport Properties of Quantum Dots
W. Pfaff, D. Weinmann, W. Haeusler +3
The influence of excited levels on nonlinear transport properties of a quantum dot weakly coupled to leads is studied using a master--equation approach. A charging model for the do…
Coulombically Interacting Electrons in a One-dimensional Quantum Dot
Wolfgang Haeusler, Bernhard Kramer, PTB Braunschweig
The spectral properties of up to four interacting electrons confined within a quasi one--dimensional system of finite length are determined by numerical diagonalization including t…