Experimental investigation demonstrates negative differential photoconductance in alternately doped multiple quantum wells, indicating consistency with sequential tunneling theory.
We have measured the infrared photoconductivity of an alternately doped multiple quantum well structure. From this measurement, the density of the electrons dynamically stored in the undoped wells, which is critically important in the theory of tunneling, can be deduced at different external biases. A striking negative differential photoconductance feature is observed which is fully consistent with the theory of sequential tunneling.
No takes yet. Share an insight, caveat, or question.
Choi et al. (1988) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: