Journal of Crystal Growth, Vol.214, 428-431, 2000
Pressure effect on the exchange interaction in the interface region of a CdTe/CdMnTe quantum-well structure
Exchange interaction of an exciton in a quantum well with magnetic ions in the interface region and pressure effect on the interaction are investigated for a 1.9 nm thick CdTe/Cd1-xMnxTe (x = 0.24) single quantum well (SQW). Photoluminescence has been measured at 4 K under magnetic fields to 60 T generated by a motor-generator driven long-pulsed magnet and hydrostatic pressures to 2.45 GPa produced in a diamond anvil cell (DAC) with a plastic body. An additional red shift is observed in a Zeeman shift for the SQW above 30 T. This structure has enabled us to evaluate the above mentioned interaction quite accurately and to find that pressure enhances it.
Keywords:CdTe/CdMnTe single quantum well structure;interface;exciton;photoluminescence;sp-d exchange interaction;pressure effect