Changes of the dimensionality and {ital T}{sub {ital c}} through the iodine intercalation and oxidation in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} single crystals
- Department of Applied Physics, Faculty of Engineering, Tohoku University, Aramaki Aoba, Aoba-ku, Sendai 980-77 (Japan)
- Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-77 (Japan)
- Research Institute for Electronic Science, Hokkaido University, Kita-ku, Sapporo 060 (Japan)
- National Institute for Research in Inorganic Materials, 1-1 Namiki, Tsukuba 305 (Japan)
- Department of Physics, Faculty of Science, Tokyo Institute of Technology, 2-12-1 Oh-Okayama, Meguro-ku, Tokyo 152 (Japan)
The effects of stage-one iodine intercalation and oxidation on the dimensionality of the physical properties and on the superconducting transition temperature {ital T}{sub {ital c}} have been investigated in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} single crystals. Both intercalation and oxidation change the dimensionality of the normal-state properties from pseudo-two-dimensional to three-dimensional, decrease {ital T}{sub {ital c}} and also change the magnetic-field dependence of the activation energy in the flux creep. The broadening of the resistive superconducting-transition under magnetic fields is suppressed through only the oxidation. These changes through the intercalation and oxidation have been found to be explained by the multilayer model, where a high-{ital T}{sub {ital c}} superconductor is regarded as an alternating stack of the CuO{sub 2} layer ({ital S} layer) and the block layer ({ital N} layer), taking account of the proximity effect and of the redistribution of carriers to the {ital S} and {ital N} layers. We have arrived at the conclusion that the multilayer model can be one of the candidates for the model of high-{ital T}{sub {ital c}} superconductors.
- OSTI ID:
- 132873
- Journal Information:
- Physical Review, B: Condensed Matter, Vol. 52, Issue 21; Other Information: PBD: 1 Dec 1995
- Country of Publication:
- United States
- Language:
- English
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