TY - JOUR
T1 - Strong biexcitonic effects and exciton-exciton correlations in ZnO
AU - Hazu, K.
AU - Sota, Takayuki
AU - Suzuki, K.
AU - Adachi, S.
AU - Chichibu, S. F.
AU - Cantwell, G.
AU - Eason, B.
AU - Reynolds, C.
AU - Litton, W.
PY - 2003/7/15
Y1 - 2003/7/15
N2 - We have studied experimentally biexcitonic states of ZnO of rather high quality in the low exciton density limit by means of time-integrated and spectrally-resolved four-wave mixing (FWM). FWM emission signals due to biexcitons consisting of two A-hole excitons (AA biexcitons), an A-hole and a B-hole exciton (AB biexcitons), and two B-hole excitons (BB biexcitons) have been clearly observed according to polarization selection rules. The obtained binding energies for AA, AB, and BB biexcitons are 15.6, 16.6, and 4.7 meV, respectively. A brief discussion is also given on the contribution of biexciton and two-pair continuum resonances to the FWM signal.
AB - We have studied experimentally biexcitonic states of ZnO of rather high quality in the low exciton density limit by means of time-integrated and spectrally-resolved four-wave mixing (FWM). FWM emission signals due to biexcitons consisting of two A-hole excitons (AA biexcitons), an A-hole and a B-hole exciton (AB biexcitons), and two B-hole excitons (BB biexcitons) have been clearly observed according to polarization selection rules. The obtained binding energies for AA, AB, and BB biexcitons are 15.6, 16.6, and 4.7 meV, respectively. A brief discussion is also given on the contribution of biexciton and two-pair continuum resonances to the FWM signal.
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U2 - 10.1103/PhysRevB.68.033205
DO - 10.1103/PhysRevB.68.033205
M3 - Article
AN - SCOPUS:85039028714
SN - 1098-0121
VL - 68
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 11
ER -