Abstract
The Friedel sum rule is extended to express the electron number accumulated within an asymmetric potential well in terms of the phases of transmission and reflection amplitudes of a double-barrier potential, in the presence of a bias voltage and charging effects. It is applied to study non-equilibrium transport properties in asymmetric double-barrier systems. The current-voltage characteristics depends on the sign of the bias voltage, which is caused by the different accumulation of charges in the quantum well. Our self-consistent calculation shows the hysteresis in the current-voltage characteristics which agrees with the experimental observation.
Original language | English |
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Pages (from-to) | 2594-2601 |
Number of pages | 8 |
Journal | Journal of the Physical Society of Japan |
Volume | 65 |
Issue number | 8 |
DOIs | |
Publication status | Published - 1996 |
Keywords
- Asymmetric double-barrier
- Charging effect
- Friedel sum rule
- Intrinsic bistability
- Resonant tunneling
ASJC Scopus subject areas
- Physics and Astronomy(all)