Time-dependent study of bistability in resonant-tunneling structures

Authors
Kececioglu, E Yalabik, MC
Citation
E. Kececioglu et Mc. Yalabik, Time-dependent study of bistability in resonant-tunneling structures, PHYS REV B, 59(3), 1999, pp. 2111-2115
Citations number
5
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B-CONDENSED MATTER
ISSN journal
01631829 → ACNP
Volume
59
Issue
3
Year of publication
1999
Pages
2111 - 2115
Database
ISI
SICI code
0163-1829(19990115)59:3<2111:TSOBIR>2.0.ZU;2-G
Abstract
A computational time-dependent study of the many-particle resonant-tunnelin g problem in the bistable regime is presented. The Schrodinger equation is solved directly, without the nonlinearizing mean-field-type approximations. The bistability then manifests itself in the form of instabilities, which occur as oscillations in the current-voltage characteristics. The time depe ndence of the wave function in the Schrodinger equation is studied by discr etizing the energy spectrum and the time steps, for the two-, four-, and si x-particle system. [S0163-1829(98)02348-0].