Critical-current enhancement in particle-irradiated cuprate semiconductors
- Naval Research Laboratory, Code 4615, Washington, DC, (USA)
- Superconductor Technologies, Inc., 460 Ward Drive, Santa Barbara, California, (USA)
Detailed measurements have been made of the magnetic field (0{lt}{ital H}{lt}6 {ital T}) and temperature (10 K{lt}{ital T}{lt}100 K) dependencies of the critical current density {ital j}{sub {ital c}} in Tl{sub 2}CaBa{sub 2}Cu{sub 2}O{sub 8} films before and after irradiation with incremental fluences (0{lt}{Phi}{lt}3{times}10{sup 16} cm{sup {minus}2}) of 2 MeV protons. The results are interpreted quantitatively in terms of radiation-induced changes in (1) the critical temperature, (2) the rate of thermal flux creep, and (3) local scale superconductivity. Radiation-induced enhancements in {ital j}{sub {ital c}} are described by an expression which allows the fluence that maximizes {ital j}{sub {ital c}} to be predicted as a function of {ital H}, {ital T}, pinning energy, and particle type.
- OSTI ID:
- 5057216
- Journal Information:
- Applied Physics Letters; (United States), Journal Name: Applied Physics Letters; (United States) Vol. 59:20; ISSN APPLA; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BEAMS
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
CRITICAL CURRENT
CUPRATES
CURRENTS
ELECTRIC CURRENTS
ENERGY RANGE
FILMS
HIGH-TC SUPERCONDUCTORS
MAGNETIC FIELDS
MEV RANGE
MEV RANGE 01-10
NUCLEON BEAMS
OXIDES
OXYGEN COMPOUNDS
PARTICLE BEAMS
PHYSICAL RADIATION EFFECTS
PROTON BEAMS
RADIATION EFFECTS
SUPERCONDUCTING FILMS
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
THALLIUM COMPOUNDS
THALLIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
VORTICES