Bp. Antonyuk et Sf. Musichenko, ELECTRON-HOLE SELF-ORGANIZATION AND REFRACTIVE-INDEX FLUCTUATIONS IN AMORPHOUS-SEMICONDUCTORS, Physics letters. A, 193(4), 1994, pp. 403-408
Strong correlations between trapped electron and hole positions in amo
rphous semiconductors under light pumping are investigated. Computer s
imulation shows that the correlation radius strongly increases when pu
mping decreases. Electron (hole) density fluctuations (and, hence, the
refractive index fluctuations) for the volume of an arbitrary size/ha
ve a universal spectrum F(l)(omega) = alpha(l)/omega, where alpha(l) a
pproximately l-3/2.