Structural and superconducting properties of orientation-ordered Y₁Ba₂Cu₃O_7-x films prepared by molecular-beam epitaxy

Authors

J. Kwo, AT&T Bell Laboratories, Murray Hill, New Jersey
T.C. Hsieh, AT&T Bell Laboratories, Murray Hill, New Jersey
R.M. Fleming, AT&T Bell Laboratories, Murray Hill, New Jersey
M. Hong, AT&T Bell Laboratories, Murray Hill, New Jersey
Sy_Hwang Liou, University of Nebraska-LincolnFollow
B.A. Davidson, AT&T Bell Laboratories, Murray Hill, New Jersey
L.C. Feldman, AT&T Bell Laboratories, Murray Hill, New Jersey

Date of this Version

September 1987

Comments

Published by American Physical Society. Phys. Rev. B36, 4039 (1987). http://prb.aps.org. Copyright © 1987 American Physical Society. Permission to use.

Abstract

Superconducting Y₁Ba₂Cu₃O_7-x films were produced by metal molecular-beam epitaxy with one electron beam and two thermal cells and a molecular oxygen-gas source. The films were epitaxially grown on SrTiO₃ (100) with an a-axis orientation perpendicular to the plane, and b and c axes ordered in the plane. A sharp resistive superconducting transition with T_c (R=0) at 82 K was obtained. A lower limit of the average J_c in the plane is 10³ A/cm² at 77 K, 5×10⁴ A/cm² at 70 K, and 10⁶ A/cm² at 4.2 K.