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Comparison of resonant tunneling in a double-quantum-well three-barrier system and a single-quantum-well double-barrier system
J. M. Xu (University of Toronto), Vladimir V. Malov (University of Toronto), L. V. Iogansen (University of Toronto)
Physical review. B, Condensed matter
DOI: 10.1103/physrevb.47.7253 (Physics and Astronomy)
License: not stated (all rights reserved)
Abstract: A theoretical analysis has been carried out to compare the tunneling processes in a double-quantum-well three-barrier (DQW-TB) system and a single-quantum-well double-barrier (SQW-DB) system. Based on a general WKB formula, it is shown that a symmetric DQW-TB system with transparency-matched barriers is far superior to the SQW-DB system in a number of aspects, including the peak current, the peak-to-valley ratio, and the speed limit.
Published on 15 Mar. 1993