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One-dimensional plasmons in magnetic fields

Ulrichs, E. ; Biese, G. ; Steinebach, C. ; Schüller, Christian ; Heitmann, D.
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Date of publication of this fulltext: 25 Sep 2009 08:06


Abstract

We have investigated the wave-vector (q) and magnetic-field (B) dependence of plasmons propagating along quantum wires by means of resonant Raman spectroscopy. We observe a mode with a well-pronounced negative B dispersion that arises from the skipping-orbit motion of the individual electrons within the collective excitation. At higher frequencies we find a set of additional modes that represent ...

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