Symmetry breaking and nonlinear electrodynamics in the ceramic superconductor YBa/sub 2/Cu/sub 3/O/sub 7/

Journal Article · Wed Jun 01 04:00:00 EDT 1988 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.37.9840· OSTI ID:7150483

Jeffries, C; Lam, Q H; Kim, Y; Bourne, L C; Zettl, A

For bulk samples of the ceramic superconductor YBa/sub 2/Cu/sub 3/O/sub 7/ in a radio-frequency magnetic field and in a dc magnetic field H/sub 0/, we observe novel nonlinear behavior including very-high-order odd-harmonic generation if H/sub 0/ = 0. If H/sub 0/not =0, there is additional even-harmonic generation. The even-harmonic power displays a very sharp dip at H/sub 0/approx.0, of width approx.100 ..mu..G. This and related behavior can be semiquantitatively understood by modeling the system as a suitably averaged collection of flux-quantized supercurrent loops containing Josephson junctions.

• Research Organization: Physics Department, University of California, Berkeley, California 94720
• OSTI ID: 7150483
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 37:16; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CERAMICS
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
FREQUENCY MIXING
HARMONIC GENERATION
JOSEPHSON JUNCTIONS
JUNCTIONS
MAGNETIC FIELDS
NONLINEAR PROBLEMS
OXIDES
OXYGEN COMPOUNDS
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTORS
SYMMETRY BREAKING
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES