Eur. Phys. J. Plus (2015) 130: 252
https://doi.org/10.1140/epjp/i2015-15252-8

Regular Article

Magnetoplasmon modes of a terahertz-laser-driven quantum well wire

School of Physics, University of Shahrood, Shahrood, Iran

^* e-mail: hessami@shahroodut.ac.ir

Received: 17 May 2015
Accepted: 19 November 2015
Published online: 17 December 2015

Abstract

A quantum well wire system with lateral parabolic confinement, under an intense terahertz radiation and a uniform quantizing magnetic field is considered. The exact electronic states of the system are determined by constructing unitary transformations. Then, by obtaining the response of the system to a weak probing potential, the dielectric function and the magnetoplasma modes of the system are calculated in the framework of RPA theory. Results indicate roton-like behaviour for the plasmon modes of the system.