Quasiperiodic transitions to chaos of instabilities in an electron-hole plasma excited by ac perturbations at one and at two frequencies

Journal Article · Sun Mar 16 23:00:00 EST 1986 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.56.1183· OSTI ID:5900776

Held, G A; Jeffries, C

Periodic instabilities of frequency f/sub 0/ in an electron-hole plasma in Ge are excited with an external perturbation V/sub 1/ sin(2..pi..f/sub 1/t). Varying V/sub 1/ and f/sub 1/ results in quasiperiodic, mode-locked, and chaotic states comparable to those expected theoretically. Increasing V/sub 1/ while keeping the ratio f/sub 0//f/sub 1/ fixed at the golden mean (1.6180 . . .), we observe a universal transition to chaos, in quantitative agreement with theory. Driving the instability simultaneously at two incommensurate frequencies, f/sub 1/ and f/sub 2/, we observe transitions between three-frequency quasiperiodicity, two-frequency mode locking, and chaos.

• Research Organization: Department of Physics, University of California, Berkeley, California 94720 and Materials and Molecular Research Division, Lawrence Berkeley Laboratory, Berkeley, California 94720
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5900776
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 56:11; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
CURRENTS
DATA
DISTURBANCES
ELECTRIC CURRENTS
ELECTRIC FIELDS
ELECTRON-HOLE DROPLETS
ELEMENTS
ENERGY SPECTRA
ENERGY-LEVEL TRANSITIONS
EXCITATION
FREQUENCY DEPENDENCE
GERMANIUM
INFORMATION
INSTABILITY
METALS
NUMERICAL DATA
PLASMA
RANDOMNESS
SOLID-STATE PLASMA
SPECTRA
THEORETICAL DATA