Plasmon dispersion in quasi-one and one-dimensional systems with non-magnetic impurities

Details Plasmon dispersion in quasi-one and one-dimensional systems with non-magnetic impurities Plasmon dispersion in quasi-one and one-dimensional systems with non-magnetic impurities

2008-11-22

arxiv.org/abs/0811.3692v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

12 pages, no figures, Physica E, 40, 474, (2008)

Scientific paper

10.1016/j.physe.2007.07.001

We calculate the plasmon dispersion in quasi-one-dimensional quantum wires, in the presence of non-magnetic impurities, taking into consideration the memory function formalism and the role of the forward scattering. The plasma frequency is reduced by the presence of impurities. We also calculate, analytically, the plasmon dispersion in the Born approximation, for the scattering of the electrons by the non-magnetic impurities. We compare our result with the numerical results of Sarma and Hwang.

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