Asymmetric double barrier resonant tunneling structures with improved characteristics
Jun-jie Shi, Barry C. Sanders, Shao-hua Pan
Abstract
We present a self-consistent calculation, based on the global coherent tunnelling model, and show that structural asymmetry of double barrier resonant tunnelling structures significantly modifies the current-voltage characteristics compared to the symmetric structures. In particular, a suitably designed asymmetric structure can produce much larger peak current and absolute value of the negative differential conductivity than its commonly used symmetric counterpart.
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