Phonon scattering of excitons and biexcitons in ZnO.

Autor: Hazu, K., Sota, T., Adachi, S., Chichibu, Sf., Cantwell, G., Reynolds, D.C., Litton, C.W.
Předmět:
Zdroj: Journal of Applied Physics; 7/15/2004, Vol. 96 Issue 2, p1270-1272, 3p, 2 Graphs
Abstrakt: The phase relaxation time of biexcitons Tb2bi and that of excitons T2ex in a bulk ZnO have been measured by the use of femtosecond four-wave mixing as functions of excitation wavelength, excitation power, and temperature. The biexciton-acoustic phonon interaction coefficient has been determined to be Βacbi ≈ 53/µeV/K as an average value. For A excitons, the interaction coefficients with acoustic and optical phonons have been determined to beΒacex≈ 8.4 µeV/K and Βoptex ≈ 14 meV, respectively. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index