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

Volume

27

Issue

2

fYear

1991

fDate

3/1/1991 12:00:00 AM

Firstpage

1178

Lastpage

1181

Abstract

Hole-carrier transport in epitaxial (001) Y₁Ba₂Cu₃O_y 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; Y₁Ba₂Cu₃O_y; 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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.133394

Filename

133394