A method of investigating well width fluctuations in diluted magnetic semiconductor superlattices using spin-flip Raman spectroscopy

The possibility of using spin-flip Raman spectroscopy as a tool for determining accurately the disorder in magnetic superlattice (SL) microstructures is examined theoretically. It is shown that the spin-flip Raman spectra for a weakly coupled SL, disordered in units of monolayers, will consist of a number of peaks equal to the number of possible values of the disorder (m) in a given quantum well associated with a given value of the magnitude of the disorder (M). The various peaks can be associated with a particular value of m from observation of their relative intensities.