Superconducting epitaxial Tl sub(2)Ba sub(2)CuO sub(6+ delta ) thin films on SrTiO sub(3) with tetragonal lattice and continuously adjustable critical temperature

• Published in: Physica. C, Superconductivity Vol. 262; no. 1-2; pp. 98 - 102
• Main Authors: Wang, C A, Ren, Z F, Wang, J H, Petrov, D K, Naughton, M J, Yu, W Y, Petrou, A
• Format: Journal Article
• Language: English
• Published: 01.01.1996
• ISSN: 0921-4534

Epitaxial Tl sub(2)Ba sub(2)CuO sub(6+ delta )(Tl-2201) thin films on single crystalline SrTiO sub(3) substrate have been synthesized by RF magnetron sputtering followed by a two-step annealing process. X-ray diffraction data show that the film is c-axis oriented with full width at half maximum of rocking curve (FWHM) of 0.265 degree and alignment in the ab-plane. The zero-resistance T sub(c) of the same film can be increased or decreased continually and reversibly in the 11-80 K range by annealing in argon or air, with no change in tetragonal lattice symmetry.