Modified deposition procedure for high quality YBa/sub 2/Cu/sub 3/O/sub 7-x//SrTiO/sub 3/ bilayers

Author

Talyansky, V. ; Petersen, K. ; Doughty, C. ; Xi, X.X. ; Venkatesan, T.

Author_Institution

Dept. of Phys., Maryland Univ., College Park, MD, USA

Volume

5

Issue

2

fYear

1995

fDate

6/1/1995 12:00:00 AM

Firstpage

2869

Lastpage

2871

Abstract

The degradation of an ultrathin YBCO layer under SrTiO/sub 3/ due to oxygen deficiency poses a fundamental problem in growing a bilayer which may be patterned into a superconducting FET. Annealing between depositions while growing the bilayer can help increase the T/sub c/ of the YBCO while retaining acceptable quality of the SrTiO/sub 3/. This study found T/sub c/ in the range of 60-80 K for a 4 unit-cell thick YBCO film under SrTiO/sub 3/.<>

Keywords

annealing; barium compounds; high-temperature superconductors; pulsed laser deposition; strontium compounds; superconducting thin films; yttrium compounds; 60 to 80 K; YBa/sub 2/Cu/sub 3/O/sub 7-x//SrTiO/sub 3/ bilayers; YBa/sub 2/Cu/sub 3/O/sub 7/-SrTiO/sub 3/; annealing; critical temperature; degradation; deposition; oxygen deficiency; superconducting FET; ultrathin YBCO layer; Annealing; Degradation; Insulation; Nonhomogeneous media; Pulsed laser deposition; Stress; Substrates; Temperature; Voltage; Yttrium barium copper oxide;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.403190

Filename

403190