Chaotic dynamics of instabilities in solids
A review is given of studies of chaotic dynamics in several solid state systems. In each case the physical system is described, relevant equations of motion are given, experimental results are presented and interpreted, more or less, from the relevant equations, including numerical solutions. The systems are: (1) An electron-hole helical plasma density wave in a Ge crystal in parallel electric and magnetic fields; this shows period doubling and quasiperiodic routes to chaos. (2) Standing mode spin wave packets in ferrite spheres, excited by driving ferromagnetic resonance of the uniform mode; this system shows period doubling to chaos and periodic windows. (3) Resonantly driven p-n junctions in Si show extremely nonlinear behavior due to charge stored during injection; one junction shows period doubling to chaos and period adding (frequency locking); coupled junctions show, in addition, quasi-periodicity, entrainment, and behavior generic to coupled nonlinear oscillator. The fractal dimension is measured for these systems. 44 references, 32 figures.
- Research Organization:
- Lawrence Berkeley Lab., CA (USA)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 6012397
- Report Number(s):
- LBL-17914; CONF-8406186-2; ON: DE85004909
- Country of Publication:
- United States
- Language:
- English
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75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
DATA
ELECTRON-HOLE DROPLETS
EXPERIMENTAL DATA
INFORMATION
INSTABILITY
JUNCTIONS
NUMERICAL DATA
OSCILLATIONS
P-N JUNCTIONS
PHYSICS
PLASMA
RESONANCE
SEMICONDUCTOR JUNCTIONS
SOLID STATE PHYSICS
SOLID-STATE PLASMA
SOLIDS
SPIN WAVES