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Title: Scaling properties of the anisotropic magnetoresistance in YBa2Cu3O7/PrBa2Cu3O7 superlattices
Authors: Fu, C.M. ×
Moshchalkov, V.V.
Boon, Willy
Temst, Kristiaan
Bruynseraede, Yvan
Jakob, G
Hahn, T
Adrian, H #
Issue Date: Jan-1993
Publisher: Elsevier science bv
Series Title: Physica C vol:205 issue:1-2 pages:111-117
Abstract: We report on measurements of the magnetoresistance as a function of the angle theta between magnetic field H and the basal plane in YBa2CU3O7/PrBa2Cu3O7 superlattices with two different thicknesses of the separator layer (YBCO: PrBCO = 1:1 and 1:3). The angular dependence of the magnetoresistance for different field intensities can be scaled into a single curve by introducing the reduced field, H(sin2 theta+gamma-2 cos2 theta)1/2, with the anisotropy parameter gamma. In the YBCO/ PrBCO = 1:3 superlattice, quite good scaling is achieved with only the perpendicular field component, which implies fully decoupled YBCO layers (gamma = infinity). In the YBCO/PrBCO= 1:1 superlattice, however, a finite anisotropy (gamma almost-equal-to 50) is necessary to obtain a convincing scaling. Measurements of the magnetoresistance for different directions between magnetic field and transport current in these superlattices have shown that the resistive transition broadening in the field is independent of the macroscopic Lorentz force. An interpretation of these data based on the two-dimensional fluctuation model is also presented.
ISSN: 0921-4534
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
Nuclear and Radiation Physics Section
× corresponding author
# (joint) last author

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