Tunneling-assisted acoustic-plasmon-quasiparticle excitation resonances in coupled quasi-one-dimensional electron gases

Article

关键词: FAR-INFRARED ABSORPTION;    SEMICONDUCTOR QUANTUM WIRES;    SYSTEMS;    RELAXATION;    SPECTRUM;   

DOI  :  10.1103/PhysRevB.61.1704

来源: SCIE

【 摘 要 】

We show that a weak nonresonant tunneling between two quantum wires leads to splitting of the acoustic plasmon mode at finite wave vector. Two gaps open up in the dipersion of the acoustic plasmon mode when its frequency is close to the frequencies of the quasiparticle excitations. In contrast to the Laudau damping of the collective excitations, these gaps are attributed to tunneling-assisted acoustic plasmon-quasiparticle excitation resonances. We predict that such a resonance can be observed in inelastic light scattering spectrum.

【 授权许可】

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