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Temperature-dependent width of current tristability for resonant tunnelling through a double-barrier structure

Journal Article


Abstract


  • When electrons tunnel through a double-barrier structure, there exists a region of bistability (or tristability) in the current-voltage characteristics due to the dynamical charge feedback effect in the resonant well. We propose a mechanism of acoustic-phonon-assisted tunnelling to explain the experimentally observed non-monotonic behaviour of the width of the tristable region. It is found that this width has a single maximum as experimentally observed. Furthermore, contrary to the previous proposal, our result shows that electron thermal activation is not the dominant mechanism in controlling this temperature-dependent width.

Publication Date


  • 1995

Citation


  • Fisher, D. J., & Zhang, C. (1995). Temperature-dependent width of current tristability for resonant tunnelling through a double-barrier structure. Journal of Physics: Condensed Matter, 7(26). doi:10.1088/0953-8984/7/26/001

Scopus Eid


  • 2-s2.0-36149028556

Volume


  • 7

Issue


  • 26

Abstract


  • When electrons tunnel through a double-barrier structure, there exists a region of bistability (or tristability) in the current-voltage characteristics due to the dynamical charge feedback effect in the resonant well. We propose a mechanism of acoustic-phonon-assisted tunnelling to explain the experimentally observed non-monotonic behaviour of the width of the tristable region. It is found that this width has a single maximum as experimentally observed. Furthermore, contrary to the previous proposal, our result shows that electron thermal activation is not the dominant mechanism in controlling this temperature-dependent width.

Publication Date


  • 1995

Citation


  • Fisher, D. J., & Zhang, C. (1995). Temperature-dependent width of current tristability for resonant tunnelling through a double-barrier structure. Journal of Physics: Condensed Matter, 7(26). doi:10.1088/0953-8984/7/26/001

Scopus Eid


  • 2-s2.0-36149028556

Volume


  • 7

Issue


  • 26