Exciton-exciton interaction and biexciton formation in bilayer systems

Lee, R. M. and Drummond, Neil and Needs, R. J. (2009) Exciton-exciton interaction and biexciton formation in bilayer systems. Physical review B, 79 (12). ISSN 1550-235X

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Abstract

We report quantum Monte Carlo calculations of biexciton binding energies in ideal two-dimensional bilayer systems with isotropic electron and hole masses. We have also calculated exciton-exciton interaction potentials and pair-distribution functions for electrons and holes in bound biexcitons. Comparing our data with results obtained in a recent study using a model exciton-exciton potential [ Schindler and Zimmermann Phys. Rev. B 78 045313 (2008)], we find a somewhat larger range of layer separations at which biexcitons are stable. We find that individual excitons retain their identity in bound biexcitons for large layer separations.

Item Type:
Journal Article
Journal or Publication Title:
Physical review B
Additional Information:
© 2009 The American Physical Society
Uncontrolled Keywords:
/dk/atira/pure/researchoutput/libraryofcongress/qc
Subjects:
ID Code:
55601
Deposited By:
Deposited On:
10 Jul 2012 08:13
Refereed?:
Yes
Published?:
Published
Last Modified:
24 Oct 2020 02:27