Hall effect and flux dynamics in YBa{sub 2}Cu{sub 3}O{sub 7}/PrBa{sub 2}Cu{sub 3}O{sub 7} multilayers in the mixed state
- Laboratorium voor Vaste-Stoffysika en Magnetisme, Katholieke Universiteit Leuven, Celestijnenlaan 200D, B-3001 Leuven (Belgium)
- Institut fuer Physik, Johannes Gutenberg Universitaet Mainz, Staudinger Weg 7, 55099 Mainz (Germany)
We report on the temperature and magnetic-field dependence of both the longitudinal resistivity {rho}{sub {ital xx}} and Hall resistivity {rho}{sub {ital xy}} of a [YBa{sub 2}Cu{sub 3}O{sub 7}(72 {ital @};OA)/PrBa{sub 2}Cu{sub 3}O{sub 7}(12 {ital @};OA)]{sub 25} multilayer in the mixed state. Near {ital T}{sub {ital c}}, the Hall resistivity {rho}{sub {ital xy}} undergoes a sign reversal in the low-field region, while at the temperature where {rho}{sub {ital xy}} shows a minimum, the vortices have the highest mobility. An analysis of the Hall conductivity {sigma}{sub {ital xy}} reveals that {sigma}{sub {ital xy}} can be successfully described by the two terms which are related to the quasiparticle excitations and the motion of free vortices, respectively. The high-{ital T}{sub {ital c}} multilayers also demonstrate the Hall sign reversal and scaling behavior {rho}{sub {ital xy}}{proportional_to}{rho}{sub {ital xx}}{sup 2}, previously reported for as-grown high-{ital T}{sub {ital c}} compounds.
- OSTI ID:
- 122319
- Journal Information:
- Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 17 Vol. 52; ISSN PRBMDO; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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