Absence of anomaly in strained thin films

Physical Review B - Condensed Matter and Materials Physics

Volumn 62, Issue 2, 2000, Pages R799-R802

  Sato, H ^a   Tsukada, A ^a   Naito, M ^a   Matsuda, A ^a  

^a TOKYO UNIVERSITY OF SCIENCE   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 13944284541     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.62.R799     Document Type: Article

References (36)

1. J. G. Bednorz and K. A. Müller, Z. Phys. B: Condens. Matter 64, 189 (1986).
2. H. Takagi et. al Jpn. J. Appl. Phys., Part 2 26, L123 (1987).
3. A. R. Moodenbaugh et. al Phys. Rev. B 38, 4596 (1988).
4. J. D. Axe et. al Phys. Rev. Lett. 62, 2751 (1989).
5. S. Katano et. al Phys. Rev. B 48, 6569 (1993).
6. C. Murayama et. al in The Physics and Chemistry of Oxide Superconductors, edited by Y. Iye and H. Yasuoka, Springer Proceedings in Physics Vol. 60 (Springer-Verlag, Berlin, 1992), p. 209.
7. W. J. Liverman et. al Phys. Rev. B 45, 4897 (1992).
8. Q. Xiong et. al Phys. Rev. B 46, 581 (1992).
9. N. Yamada and M. Ido, Physica C 203, 240 (1992).
10. J.-S. Zhou and J. B. Goodenough, Phys. Rev. B 56, 6288 (1997).
11. K. Oh-ishi and Y. Syono, J. Solid State Chem. 95, 136 (1991).
12. M. Sera et. al Solid State Commun. 69, 851 (1989).
13. Y. Maeno et. al Physica C 173, 322 (1991).
14. T. Ito and K. Oka, Physica C 231, 305 (1994).
15. H. Kojima et. al Physica C 293, 14 (1997).
16. C. Rial et. al Physica C 270, 51 (1996).
17. H. L. Kao et. al Appl. Phys. Lett. 59, 2748 (1991).
18. M. Z. Cieplak et. al Appl. Phys. Lett. 65, 3383 (1994).
19. I. E. Trofimov et. al Appl. Phys. Lett. 65, 2481 (1994).
20. H. Sato and M. Naito, Physica C 274, 221 (1997).
21. J.-P. Locquet et. al Nature (London) 394, 453 (1998).
22. M. Naito and H. Sato, Appl. Phys. Lett. 67, 2557 (1995).
23. H. Sato, M. Naito, and H. Yamamoto, Physica C 280, 178 (1997).
24. H. Takagi et. al Phys. Rev. B 40, 2254 (1989).
25. J. B. Torrance et. al Phys. Rev. B 40, 8872 (1989).
26. H. Sato et. al Phys. Rev. B 61, 12 447 (2000).
27. Here we discuss about the possibility of the presence of the extra oxygen in the compressed films cooled in (Formula presented) oxygen, which might affect on the present results. We have no available analysis methods to determine the oxygen composition of films with thicknesses as small as 300 Å with enough accuracy to judge the possibility. However, we conclude that the amount of excess oxygen is negligible based on the following facts described in the text. (1) (Formula presented) films cooled in oxygen are semiconducting. This fact means the films do not contain significant amount of excess oxygen. (2) With increasing x from 0 to 0.25, the resistivity for the LBCO films cooled in oxygen decreases systematically as seen in Fig. 22. This fact means the hole concentration is mainly controlled by Ba doping as in the bulk samples with no excess oxygen [B. Batlogg et. al Physica C 235-240, 130 (1994)].
28. (3) With increasing x from 0, the superconductivity appears at around (Formula presented) and (Formula presented) is maximized at (Formula presented) These two characteristic compositions coincide with those for the bulk samples with no excess oxygen [K. Oh-ishi and Y. Syono, J. Solid State Chem. 95, 136 (1991)].
29. T. Fujita et. al (unpublished).
30. J. M. Tranquada et. al Nature (London) 375, 561 (1995).
31. A. Bianconi et. al Phys. Rev. Lett. 76, 3412 (1996).
32. T. Kimura et. al Phys. Rev. B 53, 8733 (1996).
33. Y. Nakamura and S. Uchida, Phys. Rev. B 46, 5841 (1992).
34. K. Yamada et. al Phys. Rev. B 57, 6165 (1998).
35. J. Rossat-Mignod et. al Physica C 185-189, 86 (1991).
36. H. A. Mook et. al J. Phys. Chem. Solids 59, 2140 (1998).