EFFECT OF MAGNETIC-FIELD ON FINE-STRUCTURE OF TUNNEL CURRENT IN DOUBLE-BARRIER RESONANT-TUNNELING DEVICES

An effect of magnetic field on a fine oscillatory structure revealed i n the resonant current flowing through double-barrier resonant-tunneli ng devices is examined. It is found that the observed variation of the fine structure in a magnetic field parallel to the current direction differs considerably from that appearing in tunnel current flowing thr ough single-barrier structures. Experimental results are explained in terms of the quantum interference effect arising in structures having wide spacer layers.