Quasiperiodic transition to chaos in Ge; and magnetic susceptibility of high- Tc superconductors
This thesis consists of the study of two topics in condensed matter physics: nonlinear dynamics in a Ge crystal; and magnetic properties of the high temperature superconductor YBa{sub 2}Cu{sub 3}O{sub 7}. These are given as two parts, each of which can be read independently. The first part is concerned with the measurement of the universal spectrum of scaling indices of the critical attractor of the quasiperiodic route to chaos with golden mean winding number for the helical instability of the electron-hole plasma in a germanium crystal in a magnetic field. The second part consists of measurements of the complex ac magnetic susceptibility of the ceramic superconductor YBa{sub 2}Cu{sub 3}O{sub 7}, and together with theoretical models of the material, assumed to be composed of intergranular junctions and superconducting grains.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- DOE/ER
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 7000932
- Report Number(s):
- LBL-28950; ON: DE90011304
- Resource Relation:
- Other Information: Thesis (Ph.D.)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
GERMANIUM
DYNAMICS
HIGH-TC SUPERCONDUCTORS
MAGNETIC SUSCEPTIBILITY
COMPUTER ARCHITECTURE
COMPUTER CODES
COPPER OXIDES
CRYSTALS
DATA ACQUISITION SYSTEMS
ELECTRON-HOLE COUPLING
FRACTALS
HYSTERESIS
MAGNETIC FIELDS
NONLINEAR PROBLEMS
PLASMA INSTABILITY
RANDOMNESS
YTTRIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
ELEMENTS
INSTABILITY
MAGNETIC PROPERTIES
MECHANICS
METALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
656001* - Condensed Matter Physics- Solid-State Plasma
656100 - Condensed Matter Physics- Superconductivity
360204 - Ceramics
Cermets
& Refractories- Physical Properties