Role of normal layers in penetration depth determinations of the pairing state in high-[ital T][sub [ital c]] superconductors

Journal Article · Mon Mar 20 04:00:00 EST 1995 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.74.2343· OSTI ID:6458108

Klemm, R A ^[1]; Liu, S H ^[2]

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1. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
2. Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6032 (United States)

We calculate the penetration depth [lambda]([ital T]) for a model of the high-[ital T][sub [ital c]] superconductors based upon proximity coupling between one superconducting ([ital S]) and one normal ([ital N]) layer per unit cell. The linear, low-[ital T] region of the [lambda][sub [ital ab]]([ital T]) data of Bonn [ital et] [ital al]. on YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]] is fitted [ital quantitatively] for both [ital s]-wave and [ital d][sub [ital x][sup 2][minus][ital y][sup 2]] order parameters. However, these fitted models give very [ital different] predictions for [lambda][sub [ital c]]([ital T]), which may serve as a new test for the order parameter, or at least for the role of [ital N] layers.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38; AC05-84OR21400
• OSTI ID: 6458108
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 74:12; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360207* -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
665411 -- Basic Superconductivity Studies-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
HIGH-TC SUPERCONDUCTORS
INTERACTIONS
ORDER PARAMETERS
PAIRING INTERACTIONS
PENETRATION DEPTH
SUPERCONDUCTORS
SYMMETRY
TEMPERATURE DEPENDENCE