Effect of HgI{sub 2} intercalation on Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub {ital y}}: Interlayer coupling effect
Journal Article
·
· Physical Review, B: Condensed Matter
- Department of Physics, Pohang University of Science and Technology, San 31 Hyojadong, Pohang, Kyungbuk, 790-784 (Republic of Korea)
- Department of Chemistry, Center for Molecular Catalysis, College of Natural Sciences, Seoul National University, Seoul 151-742 (Republic of Korea)
By intercalating large HgI{sub 2} molecules between the Bi{sub 2}O{sub 2} layers in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub {ital y}}, the distance between the CuO{sub 2} blocks was significantly extended up to 7.2 A. The superconducting properties of this system were measured in various magnetic fields applied perpendicular to the CuO{sub 2} planes. This system showed large positional fluctuation of the vortex even far below the transition temperature due to the reduction of dimensionality. The change of the thermodynamic parameters is well explained by the model of Josephson-coupled superconductivity. However, the interlayer coupling strength did not change the transition temperature drastically, which does not support the suggestion of Wheatley, Hsu, and Anderson of coherent hopping of the valence bond pair between the CuO{sub 2} layers. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 283909
- Journal Information:
- Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 18 Vol. 53; ISSN 0163-1829; ISSN PRBMDO
- Country of Publication:
- United States
- Language:
- English
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