Hostname: page-component-745bb68f8f-f46jp Total loading time: 0 Render date: 2025-02-04T15:22:34.836Z Has data issue: false hasContentIssue false
  • English
  • Français

RHEED-Controlled Unit-Cell by Unit-Cell Layer-Growth of High-Tc Cuprate Films with Laser-Ablation Technique

Published online by Cambridge University Press:  26 February 2011

T. Frey ,
C. C. Chi ,
C. C. Tsuei ,
T. Shaw  and
G. Trafas
T. Frey
Affiliation:
IBM T. J. Watson Research Center, Yorktown Heights, New York
C. C. Chi
Affiliation:
IBM T. J. Watson Research Center, Yorktown Heights, New York
C. C. Tsuei
Affiliation:
IBM T. J. Watson Research Center, Yorktown Heights, New York
T. Shaw
Affiliation:
IBM T. J. Watson Research Center, Yorktown Heights, New York
G. Trafas
Affiliation:
IBM T. J. Watson Research Center, Yorktown Heights, New York
Get access

Abstract

Thin films of PrBa2Cu3O7 and in-situ superconducting YBa2Cu3O7 were grown on (100)-oriented SrTiO3 substrates by laser ablation under molecular beam epitaxial condition. The unit-cell by unit-cell growth of these high-Tc cuprate materials has been indicated by RHEED-oscillations and further confirmed by cross-sectional TEM (X-TEM) and small angle X-ray. Superconductivity with Tc (R = 0) at 35 K was observed for samples with one unit-cell YBa2Cu3O7 layers sandwiched between PrBa2Cu3O7 layers. TC varies with the number of YBa2Cu3O7 unit-cell layers. An eight unit-cell thick YBa2Cu3O7 film is superconducting at 86 K. Substrate temperature is found to be the most crucial parameter in determining the growth mode and superconducting properties.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 275: Symposium S – Layered Superconductors: Fabrication, Properties and Applications , 1992 , 61
Copyright
Copyright © Materials Research Society 1992

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] Terashima, T. et al. Phys. Rev. Lett. 67, 1362 (1991).Google Scholar
[2] Chandrasekhar, N. et al. Comment on “Superconductivity of one-unit-cell thick YBa2Cu3O7thin films” (to be published)Google Scholar
[3] Matsumoto, T. et al. Appl. Phys. Lett. 58, 2039 (1991).Google Scholar
[4] Li, X. et al. Jpn. J. Appl. Phys. 31, (1992).Google Scholar
[5] Kanai, M. et al. Jpn. J. Appl. Phys. 31, (1992).Google Scholar
[6] Bauer, E., Poppa, H., Thin Solid Films 12, 167 (1991).Google Scholar
[7] Herman, M. A. and Sitter, H., Molecular Beam Epitaxy, (Springer-Verlag, Berlin (1989)).Google Scholar
[8] Li, Q. et al. Phys. Rev. Lett. 64, 3086 (1990).Google Scholar
[9] Douglas, H. et al. Phys. Rev. Lett. 65, 1160 (1990).Google Scholar