Normal-state transport properties of YBa{sub 2}Cu{sub 3}O{sub 7{minus}y}/PrBa{sub 2}Cu{sub 3}O{sub 7{minus}y} superlattices
- Department of Physics, National Taiwan University, Taipei 10764, Taiwan, Republic of (China)
- Department of Physics, National Taiwan Normal University, Taipei 11718, Taiwan, Republic of (China)
This work measures the resistivity and Hall coefficient R{sub H} for a series of YBa{sub 2}Cu{sub 3}O{sub 7{minus}y}/PrBa{sub 2}Cu{sub 3}O{sub 7{minus}y} (YBCO/PBCO) superlattices. The Hall coefficient R{sub H} systematically varies with different thicknesses of YBCO or PBCO layers. The Hall number decreases with a decreasing thickness of YBCO layers or increasing thickness of PBCO layers. We investigate the temperature dependence of the Hall angle in YBCO/PBCO superlattices as well. The cotangent Hall angle is also observed to follow a universal T{sup 2} dependence in all superlattices, i.e., cot{theta}{sub H}={alpha}T{sup 2}+C where both {alpha} and C change with the layer thickness. From the results presented herein, we believe that the reduction in carrier density, caused by the magnetic scattering effects and hole filling which occur near the interface, leads to the depression of T{sub c} in the YBCO/PBCO superlattice. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 542250
- Journal Information:
- Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 10 Vol. 56; ISSN PRBMDO; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
Similar Records
Laser ablation synthesis and properties of epitaxial YBa sub 2 Cu sub 3 O sub 7-. delta. /PrBa sub 2 Cu sub 3 O sub 7-. delta. superconducting superlattices
Angular dependence of the flux pinning for YBa{sub 2}Cu{sub 3}O{sub y}/PrBa{sub 2}Cu{sub 3}O{sub y} superlattice