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Proceedings Paper

From bistability to spatio-teporal chaos in a resonant-tunneling diode
Author(s): J. Unkelbach; A. Amann; P. Rodin; E. Schoell
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Paper Abstract

Charge accumulation in the quantum-well of a double-barrier resonant-tunneling diode (DBRT) may result in bistability that provides a basis for formation of lateral current-density patterns. A typical pattern expected to appear is a current density front. Such fronts correspond to switching transitions and generally cannot be stabilized by a conventional external circuit. In this paper we discuss formation and stabilization of stationary current density patterns in bistable DBRT. We demonstrate that the intrinsic dynamics of the DBRT can lead to the onset of regular or chaotic spatio-temporal oscillations if an attempt to stabilize unstable current density patterns by means of a simple control loop is undertaken.

Paper Details

Date Published: 11 June 2003
PDF: 4 pages
Proc. SPIE 5023, 10th International Symposium on Nanostructures: Physics and Technology, (11 June 2003); doi: 10.1117/12.514296
Show Author Affiliations
J. Unkelbach, Technische Univ. Berlin (Germany)
A. Amann, Technische Univ. Berlin (Germany)
P. Rodin, Technische Univ. Berlin (Germany)
E. Schoell, Technische Univ. Berlin (Germany)

Published in SPIE Proceedings Vol. 5023:
10th International Symposium on Nanostructures: Physics and Technology
Zhores I. Alferov; Leo Esaki, Editor(s)

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