Rights statement: © 2009 The American Physical Society
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Exciton-exciton interaction and biexciton formation in bilayer systems
AU - Lee, R. M.
AU - Drummond, Neil
AU - Needs, R. J.
N1 - © 2009 The American Physical Society
PY - 2009/3/12
Y1 - 2009/3/12
N2 - 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.
AB - 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.
U2 - 10.1103/PhysRevB.79.125308
DO - 10.1103/PhysRevB.79.125308
M3 - Journal article
VL - 79
JO - Physical review B
JF - Physical review B
SN - 1550-235X
IS - 12
M1 - 125308
ER -