Scaling behavior and mixed-state Hall effect in epitaxial HgBa{sub 2}CaCu{sub 2}O{sub 6+{delta}} thin films
- Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045 (United States)
- Department of Physics, Yeungnam University, Kyungsan 712-749 (Korea)
We have measured the mixed-state Hall effect in superconducting HgBa{sub 2}CaCu{sub 2}O{sub 6+{delta}} thin films. We found that the Hall resistivity {rho}{sub xy} shows a double sign reversal in low fields, then shifts to positive without changing the general shape in higher fields. At the higher field region, the Hall conductivity {rho}{sub xy} is observed to be the sum of two terms, C{sub 1}/H and C{sub 2}H, where C{sub 1} and C{sub 2} are field independent. The scaling behavior between {sigma}{sub xy} and {rho}{sub xx} (longitudinal resistivity) shows a strong dependence on fields. The scaling exponent {beta} in {rho}{sub xy}=A{rho}{sub xx}{sup {beta}} increases from 1.5{plus_minus}0.1 to 1.9{plus_minus}0.1 as field increases from 1 to 5.5 T. The field dependence of tangent of the Hall angle is linear only in the flux-flow regime, different from Bi- and Tl-based cuprates. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 435234
- Journal Information:
- Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 1 Vol. 55; ISSN PRBMDO; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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