Effect of magnetic field and temperature on the voltage-current characteristics of YBCO superconductor

Bocuk H., Albiss B., Ercan I., Ozkan H., Gasanly N.

JOURNAL OF LOW TEMPERATURE PHYSICS, vol.105, pp.975-980, 1996 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 105
  • Publication Date: 1996
  • Doi Number: 10.1007/bf00768509
  • Journal Name: JOURNAL OF LOW TEMPERATURE PHYSICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.975-980
  • Middle East Technical University Affiliated: Yes

Abstract

Voltage-current characteristics of YBCO superconductor was studied under magnetic field up to 0.4 T at different temperatures below T-c. The critical temperature decreases and the transition width broadens under magnetic field. V-I data below T-c were fitted to a power law expression V similar to I-beta(T,I-B) in which beta(T,B) is found to decrease with increase of magnetic field and temperature, gradually approaching unity as T approaches T-c, being independent of magnetic field. Similarly beta(T,B) approaches unity as magnetic field increases being independent of temperature.