TY - JOUR
T1 - Exciton-exciton interactions in quantum wells
T2 - Optical properties and energy and spin relaxation
AU - Ben-Tabou De-Leon, S.
AU - Laikhtman, B.
PY - 2001/3/7
Y1 - 2001/3/7
N2 - A gas of interacting excitons in quantum wells is studied. We obtain the Hamiltonian of this gas by the projection of the electron-hole plasma Hamiltonian to exciton states and an expansion in a small density. Matrix elements of the exciton Hamiltonian are rather sensitive to the geometry of the heterostructure. The mean field approximation of the exciton Hamiltonian gives the blueshift and spin splitting of the exciton luminescence lines. We also write down the Boltzmann equation for excitons and estimate the energy and spin relaxation time resulting from the exciton-exciton scattering. Making use of these calculations, we succeeded in explaining some recent experimental results that have not been explained so far.
AB - A gas of interacting excitons in quantum wells is studied. We obtain the Hamiltonian of this gas by the projection of the electron-hole plasma Hamiltonian to exciton states and an expansion in a small density. Matrix elements of the exciton Hamiltonian are rather sensitive to the geometry of the heterostructure. The mean field approximation of the exciton Hamiltonian gives the blueshift and spin splitting of the exciton luminescence lines. We also write down the Boltzmann equation for excitons and estimate the energy and spin relaxation time resulting from the exciton-exciton scattering. Making use of these calculations, we succeeded in explaining some recent experimental results that have not been explained so far.
UR - http://www.scopus.com/inward/record.url?scp=85038987891&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.63.125306
DO - 10.1103/PhysRevB.63.125306
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AN - SCOPUS:85038987891
SN - 1098-0121
VL - 63
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 12
ER -