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Tunneling current through a resonant structure
Author(s) -
Lu X. J.,
Horing N. J. M.
Publication year - 1992
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221740103
Subject(s) - quantum tunnelling , pauli exclusion principle , bistability , condensed matter physics , hysteresis , conductance , physics , population , resonance (particle physics) , quantum mechanics , demography , sociology
Tunneling transport through a resonant double‐barrier structure is examined, with attention focused on the suppression of transmission current due to Pauli exclusion arising from population growth of the resonant state. A quasi‐analytic theory is developed to self‐consistently determine the population of the resonant state and its exclusion suppression of tunneling. Furthermore, the role of resonant state population in inducing an electrostatic increase of the resonant level energy, which tends to enhace tunneling, is considered. Taking all these features in joint consideration, a quasi‐analytic description of intrinsic bistability in the regime of negative differential conductance is achieved, exhibiting hysteresis in the I‐U characteristic.