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Author Hussey, N. E. ♦ Cooper, J. R. ♦ Doyle, R. A. ♦ Lin, C. T. ♦ Liang, W. Y. ♦ Sinclair, D. C. ♦ Balakrishnan, G. ♦ Paul, D. M. ♦ Revcolevschi, A.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ BARIUM OXIDES ♦ MAGNETIZATION ♦ PENETRATION DEPTH ♦ BISMUTH OXIDES ♦ CALCIUM OXIDES ♦ CUPRATES ♦ HIGH-TC SUPERCONDUCTORS ♦ LANTHANUM OXIDES ♦ STRONTIUM OXIDES ♦ THALLIUM OXIDES ♦ YTTRIUM OXIDES ♦ ANISOTROPY ♦ COHERENCE LENGTH ♦ JOSEPHSON EFFECT ♦ LAYERS ♦ MONOCRYSTALS ♦ TEMPERATURE DEPENDENCE ♦ TEMPERATURE RANGE 0065-0273 K ♦ THREE-DIMENSIONAL CALCULATIONS ♦ TWO-DIMENSIONAL CALCULATIONS ♦ TYPE-II SUPERCONDUCTORS
Abstract Low-field magnetization {ital M}({ital H}) measurements are reported for single crystals of various high-{ital T}{sub {ital c}} cuprates with different anisotropies ({gamma}={lambda}{sub {ital c}}/{lambda}{sub {ital ab}}, where {lambda}{sub {ital c}} and {lambda}{sub {ital ab}} are the {ital c}-axis and {ital ab}-plane penetration depths). For YBa{sub 2}Cu{sub 3}O{sub 7} ({gamma}{approx_equal}5) and La{sub 1.89}Sr{sub 0.11}CuO{sub 4} ({gamma}{approx_equal}12), qualitatively similar {ital M}({ital H}) behavior is observed when the magnetic field is applied both perpendicular ({ital H}{parallel}{ital c}) and parallel ({ital H}{parallel}{ital ab}) to the CuO{sub 2} planes, consistent with a description of these compounds as anisotropic three-dimensional superconductors. Tl{sub 2}Ba{sub 2}CuO{sub 6+{delta}} ({gamma}{approx_equal}25) and Bi{sub 2}Sr{sub 2}CaCu{sub 2}O ({gamma}{approx_equal}250), on the other hand, show significant differences in {ital M}({ital H}) with {ital H}{parallel}{ital ab} which can be attributed to the presence of Josephson screening currents across the layers. These observations imply that the nature of the interlayer coupling is determined primarily by the ratio of the out-of-plane coherence length {xi}{sub {ital c}} to the interlayer spacing {ital s}. {copyright} {ital 1996 The American Physical Society.}
ISSN 01631829
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-03-01
Publisher Place United States
Journal Physical Review, B: Condensed Matter
Volume Number 53
Issue Number 10


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