Hostname: page-component-848d4c4894-ndmmz Total loading time: 0 Render date: 2024-05-03T21:17:52.845Z Has data issue: false hasContentIssue false

High Critical Current Density in Ultrathin Ybco Films

Published online by Cambridge University Press:  28 February 2011

X.X. Xi
Affiliation:
Physics Department, Rutgers University, Piscataway, NJ 08854
W. Schauer
Affiliation:
ITP, P.O.Box 3640,D‐7500 Karlsruhe, FRG.
V. Windte
Affiliation:
ITP, P.O.Box 3640,D‐7500 Karlsruhe, FRG.
O. Meyer
Affiliation:
Kernforschungszentrum Karlsruhe,INFP
G. Linker
Affiliation:
Kernforschungszentrum Karlsruhe,INFP
Q. Li
Affiliation:
Physics Department, Rutgers University, Piscataway, NJ 08854
J. Geerk
Affiliation:
Kernforschungszentrum Karlsruhe,INFP
Get access

Abstract

Measurements of the critical current density Jc for ultrathin YBa2Cu307‐X (YBCO) films are presented.A high Jc value at 77K in zero field of 2xl06A/cm2 was obtained in a 30nm thick film and even a 5nm thick film could carry a supercurrent of 3.5x105 A/cm2 at 4.2K in zero field. A very weak field‐dependence of Jc was observed when the field was in the (a,b) plane showing greatly depressed dissipation.

Type
Research Article
Copyright
Copyright © Materials Research Society 1990

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1 Tinkham, M., Phys. Rev. Lett. 61, 1658(1988)Google Scholar
2 Xi, X.X., Geerk, J., Linker, G., Li, Q. and Meyer, O., Appl. Phys. Lett. 54, 2367(1989)Google Scholar
3 Xi, X.X., Linker, G., Meyer, O., Nold, E., Obst, B., Ratzel, F., Smithey, R., Strehlau, B., Weschenfelder, F. and Geerk, J., Z. Phys. B74, 13 (1989)Google Scholar
4 Hettinger, J.D., Swanson, A.G., Skocpol, W.J., Brooks, J.S., Greybeal, J.M., Mankiewich, P.M., Howard, R.E., Straughn, B.L. and Burkhardt, E.G., Phys. Rev. Lett. 62, 2044(1989)Google Scholar