Hall coefficients of YBa{sub 2}Cu{sub 3}O{sub y}/PrBa{sub 2}Cu{sub 3}O{sub y} superlattices in the flux-flow regime
- Department of Physics, National Taiwan University, Taipei 10746, Taiwan, Republic of (China)
- Department of Physics, National Taiwan Normal University, Taipei 11718, Taiwan, Republic of (China)
In this work, we measured the longitudinal {rho}{sub xx} and transverse {rho}{sub xy} resistivities as a function of the current density in the flux-flow regime in YBa{sub 2}Cu{sub 3}O{sub y}/PrBa{sub 2}Cu{sub 3}O{sub y} superlattices. According to these measurements, the Hall electric field is a nonlinear function of the current density in the vicinity of the local minimum of negative Hall coefficient. Also, the Hall resistivity is independent of J in the low current density. Furthermore, the {rho}{sub xy} and {rho}{sub xx} are found to obey the power law {rho}{sub xy}=A{rho}{sub xx}{sup {beta}} with {beta}=1.7{plus_minus}0.05 over a wide current densities and temperatures. Above results are discussed in terms of the existing theories. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 531798
- Journal Information:
- Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 1 Vol. 56; ISSN PRBMDO; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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