Plasmons in coupled bilayer structures

Preprint

27 October 1998

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/9810374

Abstract

We calculate the collective charge density excitation dispersion and spectral weight in bilayer semiconductor structures {\it including effects of interlayer tunneling}. The out-of-phase plasmon mode (the ``acoustic'' plasmon) develops a long wavelength gap in the presence of tunneling with the gap being proportional to the square root (linear power) of the tunneling amplitude in the weak (strong) tunneling limit. The in-phase plasmon mode is qualitatively unaffected by tunneling. The predicted plasmon gap should be a useful tool for studying many-body effects.

Keywords

BILAYER STRUCTURES
DENSITY EXCITATION
COLLECTIVE CHARGE
COUPLED BILAYER
CHARGE DENSITY
PHASE PLASMON
PLASMON MODE
TUNNELING
GAP

All Related Versions

Version 1, 1998-10-27, ArXiv
Published version: Physical Review Letters, 81 (19), 4216.

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