Hamburg 2009 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 15: Poster I

A 15.41: Poster

Dienstag, 3. März 2009, 16:30–19:00, VMP 9 Poster

Equilibrium properties of charge-asymmetric quantum-bilayers — •Lasse Rosenthal, Karsten Balzer, Alexej Filinov, and Michael Bonitz — Institut für Theoretische und Astrophysik, Christian-Albrechts-Uniersität, Leibnitzstraße 15, 24098 Kiel

We present a quantum-statistical treatment of the equilibrium properties of 2-dimensional quantum bilayers with spatially separated electrons and holes[1]. In the regime of intermediate coupling the system is described by solving the self-consistent Hartree-Fock equations[2].

We compute the single-particle spectrum and density profiles of up to N=19 electrons and holes. The influence of different mass ratios of electrons and holes is investigated. Results of spin-polarized calculations are compared to spin unrestricted calculations.

For moderate coupling the description is extended to include correlation effects. This is done by solving Dyson’s equation for the equilibrium Matsubara Greens-function.

[1]P.Ludwig, K.Balzer, A.Filinov, H.Stolz and M.Bonitz, New J.Phys.10 083031

[2]M.Bonitz, D.Semkat(Eds.), Introduction to Computational Methods in Many Body Physics, Rinton Press, Princeton (2006)