Open AccessTHEORETICAL STUDIES ON RESONANT TUNNELING IN MULTI-BARRIER STRUCTURES
Author(s) -
Huaizhe Xu,
Yinyue Wang,
Fangqing Zhang,
Guanghua Chen
Publication year - 1992
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.41.1493
Subject(s) - transmission coefficient , quantum tunnelling , resonance (particle physics) , rectangular potential barrier , physics , transmission (telecommunications) , quantum well , quantum , condensed matter physics , coupling coefficient of resonators , eigenvalues and eigenvectors , range (aeronautics) , materials science , atomic physics , quantum mechanics , optics , laser , resonator , electrical engineering , composite material , engineering
Resonant tunneling in rectangular multi-barrier structures are studied theoretically. Analytical expressions of the transmission coefficient and the resonance condition are strictly derived. It is found that the resonance energies are different from the eigenvalues in the quantum well due to coupling between wells in the multi-barrier structures. The resonance condition corresponds to the energy range of the physically possible wave functions in the Kronig-Penney model. It is confirmed that the transmission spectrum is a Lorentzian nearby energies of resonance. We believe that the expression are useful for evaluating the energy variations of transmission coefficient and estimating the resonance energy, and also useful in fabrication of resonant tunneling devices.