Abstract

We present a study of tunnelling processes between CdTeCdMnTe quantum wells by means of steady-state and time-resolved spectroscopy. The energy difference of the involved states and the barrier height can be controlled by an external magnetic field and resonances of the heavy-hole and exciton levels can be achieved. The heavy-hole (hh) resonance is essential for the type and direction of the transfer process. An efficient transfer of excitons is possible even without emission of LO phonons.

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