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HL: Halbleiterphysik

HL 12: Poster I: Quanten Hall Effekt (1-9), II-VI Halbleiter (10-17), Epitaxie (18-23), Quantenpunkte und -dr
ähte (24-50), Photonik (51-59), Metall-Isolator Übergang (60-64), Si/Ge (65-67), Elektronentheorie (68-69), Amorphe Halbleiter, Ionen-Implantation

HL 12.46: Poster

Montag, 27. März 2000, 14:00–19:00, A

Local fields in quantum wires — •A. Fechner¹, M. Sassetti², and B. Kramer¹ — ¹I. Institut für Theoretische Physik, Jungiusstraße 9, D-20355 Hamburg — ²Dipartimento di Fisica, INFM, Università di Genova, Via Dodecaneso 33, I-16146 Genova

We investigate the dynamical interplay between currents and electromagnetic fields in a single–channel quantum wire in the presence of electron–electron interactions. We study the dispersion relation of the polariton which is due to the coupling of collective charge excitations in the quantum wire and electromagnetic fields. Further, we discuss the spatial shape of the local electric field in response to a given external field.