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Author Fromhold, T. M. ♦ Krokhin, A. A. ♦ Tench, C. R. ♦ Bujkiewicz, S. ♦ Wilkinson, P. B. ♦ Sheard, F. W. ♦ Eaves, L.
Sponsorship (US)
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Publisher The American Physical Society
Language English
Subject Keyword PARTICLE ACCELERATORS ♦ CYCLOTRONS ♦ ELECTRIC CONDUCTIVITY ♦ ELECTRONS ♦ HARMONIC OSCILLATORS ♦ MAGNETIC FIELDS ♦ PHASE SPACE ♦ SUPERLATTICES ♦ TRANSPORT
Abstract We investigate chaotic electron transport in the lowest miniband of a semiconductor superlattice with a tilted magnetic field. This experimentally accessible non--Kolmogorov-Arnol'd-Moser system involves only stationary electric and magnetic fields, but is dynamically equivalent to a time-dependent kicked harmonic oscillator. The onset of chaos strongly delocalizes the electron orbits, thus raising the electrical conductivity. When the cyclotron and Bloch frequencies are commensurate, the phase space is threaded by a stochastic web, which produces a further resonant increase in the conductivity.
ISSN 00319007
Educational Use Research
Learning Resource Type Article
Publisher Date 2001-07-23
Publisher Place United States
Journal Physical Review Letters
Volume Number 87
Issue Number 4


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