Title :
Effect of laser pulse on sheet currents of superconductor films
Author :
Gaikovich, K.P. ; Nozdrin, J.N.
Author_Institution :
Inst. for Phys. of Microstruct., Acad. of Sci., Nizhny Novgorod, Russia
Abstract :
Summary form only given. It was discovered that after a laser pulse irradiation of a thin (0.1 /spl mu/m) high temperature superconducting (HTSC) film which beforehand has been fixed in a strong (500 gauss) external magnetic field, the currents did not disappear but redistributed completely from the range of the laser beam footprint to surroundings without a change of the total number of current vortices. The current enhancement in the surrounding regions show that in the initial state of the film the currents were less than the critical current value J/sub c/, which should be on the whole film, according to the well-known Bean model.
Keywords :
Hall effect devices; critical currents; high-temperature superconductors; laser beam effects; superconducting critical field; superconducting thin films; vortices; 0.1 mum; 500 gauss; Bean model; critical current value; current enhancement; current vortices; external magnetic field; high temperature superconducting film; laser beam footprint; laser pulse; laser pulse irradiation; sheet currents; superconductor films; Critical current; Gaussian processes; High temperature superconductors; Laser beams; Laser transitions; Magnetic fields; Magnetic films; Optical pulses; Superconducting films; Temperature distribution;
Conference_Titel :
Quantum Electronics Conference, 2000. Conference Digest. 2000 International
Conference_Location :
Nice, France
Print_ISBN :
0-7803-6318-3
DOI :
10.1109/IQEC.2000.907876
