Intrasubband plasmons in weakly disordered array of quantum wires

Details Intrasubband plasmons in weakly disordered array of quantum wires Intrasubband plasmons in weakly disordered array of quantum wires

2001-12-27

arxiv.org/abs/cond-mat/0112468v1

Physics

Condensed Matter

Strongly Correlated Electrons

6 pages, 2 figures

Scientific paper

The paper deals with the theoretical investigation of plasmons in weakly disordered array of quantum wires, consisting of finite number of quantum wires, arranged at an equal distance from each other. The array of quantum wires is characterized by the fact that the density of electrons of one "defect" quantum wire was different from that of other quantum wires. At the same time it is assumed that "defect" quantum wire can be arranged at an arbitrary position in array. It is shown that the amount of plasmon modes in weakly disordered array of quantum wires is equal to the number of quantum wires in array. The existence of the local plasmon mode, whose properties differ from those of usual modes, is found. We point out that the local plasmon mode spectrum is slightly sensitive to the position of "defect" quantum wire in the array. At the same time the spectrum of usual plasmon modes is shown to be very sensitive to the position of "defect" quantum wire.

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