Binding energy of two-dimensional biexcitons

Jai Singh, D. Birkedal, V. G. Lyssenko, and J. M. Hvam
Phys. Rev. B 53, 15909 – Published 15 June 1996
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Abstract

Using a model structure for a two-dimensional (2D) biexciton confined in a quantum well, it is shown that the form of the Hamiltonian of the 2D biexciton reduces into that of an exciton. The binding energies and Bohr radii of a 2D biexciton in its various internal energy states are derived analytically using the fractional dimension approach. The ratio of the binding energy of a 2D biexciton to that of a 2D exciton is found to be 0.228, which agrees very well with the recent experimental value. The results of our approach are compared with those of earlier theories. © 1996 The American Physical Society.

  • Received 19 December 1995

DOI:https://doi.org/10.1103/PhysRevB.53.15909

©1996 American Physical Society

Authors & Affiliations

Jai Singh, D. Birkedal, V. G. Lyssenko, and J. M. Hvam

  • Mikroelektronik Centret, The Technical University of Denmark, DK2800 Lyngby, Denmark

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Issue

Vol. 53, Iss. 23 — 15 June 1996

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