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Observation of finite-thickness effects on the spin-density excitations in quantum wires

Steinebach, Christoph ; Schüller, Christian ; Biese, G. ; Heitmann, Detlef ; Eberl, Karl
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Date of publication of this fulltext: 25 Sep 2009 07:42


Abstract

We investigate the effect of finite thickness of quantum wires on spin-density excitations (SDEs). In contrast to plasmon excitations, SDEs depend sensitively on the force law that describes the electron-electron interaction. We find that, especially for low electron densities, the corrections due to a three-dimensional interaction are very important. We use both the time-dependent Hartree-Fock ...

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