Coupled tunneling plasmon excitations in a planar array of quantum dots

Danhong Huang and P. R. Antoniewicz
Phys. Rev. B 43, 2169 – Published 15 January 1991
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Abstract

We present a quantum-mechanical calculation of the plasmon excitations in a planar array of tunneling quantum dots. The dispersion relations of these modes are derived within the framework of the tight-binding approximation between adjacent dots and the random-phase approximation. In the presence of tunneling, both the depolarization shifts and the splitting between the longitudinal and transverse modes are greatly enhanced and are well above the experimental resolution. This makes the detection of these modes possible in Raman-scattering experiments. The present model also predicts that the gap position of the transverse mode is at the Γ point.

  • Received 27 August 1990

DOI:https://doi.org/10.1103/PhysRevB.43.2169

©1991 American Physical Society

Authors & Affiliations

Danhong Huang and P. R. Antoniewicz

  • Department of Physics, The University of Texas, Austin, Texas 78712

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Vol. 43, Iss. 3 — 15 January 1991

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