Anisotropic magnetic penetration depth of grain-aligned HgBa{sub 2}Ca{sub 2}Cu{sub 3}O{sub 8+{delta}}

Journal Article · Thu Feb 01 00:00:00 EST 1996 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.53.R2999· OSTI ID:278761

Panagopoulos, C; Cooper, J R ^[1]; Peacock, G B; Gameson, I; Edwards, P P ^[2]; Schmidbauer, W; Hodby, J W ^[3]

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1. Interdisciplinary Research Centre in Superconductivity, University of Cambridge, Madingley Road, Cambridge, CB30HE (United Kingdom)
2. School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B152TT (United Kingdom)
3. 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

Related Subjects

66 PHYSICS
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