Magnetoplasmon excitations in an array of periodically modulated quantum wires

Details Magnetoplasmon excitations in an array of periodically modulated quantum wires Magnetoplasmon excitations in an array of periodically modulated quantum wires

2000-11-08

arxiv.org/abs/cond-mat/0011138v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

9 pages, 8 figures

Scientific paper

10.1103/PhysRevB.63.245317

Motivated by the recent experiment of Hochgraefe et al., we have investigated the magnetoplasmon excitations in a periodic array of quantum wires with a periodic modulation along the wire direction. The equilibrium and dynamic properties of the system are treated self-consistently within the Thomas-Fermi-Dirac-von Weizsaecker approximation. A calculation of the dynamical response of the system to a far-infrared radiation field reveals a resonant anticrossing between the Kohn mode and a finite-wavevector longitudinal excitation which is induced by the density modulation along the wires. Our theoretical calculations are found to be in excellent agreement with experiment.

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