Title :
High electric field transport of the epitaxial YBaCuO thin films
Author :
Asano, Katsunori ; Sakuta, Ken ; Kobayashi, Takeshi
Author_Institution :
Fac. of Eng. Sci., Osaka Univ., Japan
fDate :
3/1/1991 12:00:00 AM
Abstract :
Hole-carrier transport in epitaxial (001) Y1Ba2 Cu3Oy thin films under the application of a pulsed high electric field was investigated. In every current-electric field curve of the normal conduction, strong nonlinearity appeared: currents no longer increased as the electric field increased in excess of certain threshold values. Observed current saturation was much more exaggerated with increasing low-field mobility (at lower temperatures or with better-quality films). These new phenomena of the high-temperature superconductors are very similar to the hot-carrier transport well known in semiconducting materials. Comparisons of the threshold field intensity and electron temperatures of oxide superconductors and typical semiconductors were performed
Keywords :
barium compounds; carrier mobility; high field effects; high-temperature superconductors; hot carriers; superconducting epitaxial layers; yttrium compounds; Y1Ba2Cu3Oy; current saturation; current-electric field curve; electron temperatures; epitaxial YBaCuO thin films; high electric field; high electric field transport; high temperature superconductors; hot carrier transport; low-field mobility; normal conduction; oxide superconductors; semiconductors; strong nonlinearity; threshold values; Electrons; High temperature superconductors; Hot carriers; Semiconductivity; Semiconductor films; Semiconductor materials; Superconducting films; Superconducting materials; Transistors; Yttrium barium copper oxide;
Journal_Title :
Magnetics, IEEE Transactions on
