Anisotropic magnetic penetration depth of grain-aligned HgBa{sub 2}Ca{sub 2}Cu{sub 3}O{sub 8+{delta}}
- Interdisciplinary Research Centre in Superconductivity, University of Cambridge, Madingley Road, Cambridge, CB30HE (United Kingdom)
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B152TT (United Kingdom)
- Clarendon Laboratory, University of Oxford, Parks Road, Oxford, OX13PU (United Kingdom)
The temperature ({ital T}) dependence of the anisotropic magnetic penetration depth {lambda}({ital T}) of magnetically aligned powders of crystalline HgBa{sub 2}Ca{sub 2}Cu{sub 3}O{sub 8+{delta}} is reported. Measurements were performed in the Meissner state using the ac-susceptibility technique. The temperature dependences of the in-plane, {lambda}{sub {ital ab}}({ital T}), and out-of-plane, {lambda}{sub {ital c}}({ital T}), penetration depths are markedly different. This is believed to arise from the large anisotropy ratio {gamma}=[{lambda}{sub c}(0)/{lambda}{sub {ital ab}}(0)]{approx_equal}30. The behavior of {lambda}{sub {ital ab}}({ital T}) is indicative of {ital d}-wave superconductivity while {lambda}{sub {ital c}}({ital T}) is similar to the behavior expected for a superconductor with intrinsic Josephson coupling between the CuO{sub 2} planes. Similar measurements were performed on Ba{sub 0.6}K{sub 0.4}BiO{sub 3} powders for comparison. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 278761
- Journal Information:
- Physical Review, B: Condensed Matter, Vol. 53, Issue 6; Other Information: PBD: Feb 1996
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BARIUM OXIDES
JOSEPHSON EFFECT
PENETRATION DEPTH
CALCIUM OXIDES
CUPRATES
HIGH-TC SUPERCONDUCTORS
MERCURY OXIDES
ANISOTROPY
BISMUTH OXIDES
D WAVES
FLUCTUATIONS
GRAIN ORIENTATION
POTASSIUM OXIDES
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0000-0013 K
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K
TRANSITION TEMPERATURE