Origin of the variation of T{sub c} with superconducting layer thickness and separation in YBa{sub 2}Cu{sub 3}O{sub 7{minus}x}/PrBa{sub 2}Cu{sub 3}O{sub 7} superlattices
- Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803-4001 (United States)
- Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6056 (United States)
We have investigated the superconducting (SC) properties of ultra-thin YBa{sub 2}Cu{sub 3}O{sub 7{minus}x} layers in YBa{sub 2}Cu{sub 3}O{sub 7{minus}x}/PrBa{sub 2}Cu{sub 3}O{sub 7} superlattices in which the coupling between adjacent YBa{sub 2}Cu{sub 3}O{sub 7{minus}x} layers is modulated by varying thicknesses of insulating PrBa{sub 2}Cu{sub 3}O{sub 7}. In particular, we have formulated a phenomenological model that accounts for the dependence of the YBa{sub 2}Cu{sub 3}O{sub 7{minus}x} transition temperature on both the thickness of and the separation between YBa{sub 2}Cu{sub 3}O{sub 7{minus}x} layers. The results of our analysis are compared with previous studies of conventional low-T{sub c} thin film systems. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 550562
- Journal Information:
- Physical Review, B: Condensed Matter, Vol. 56, Issue 22; Other Information: PBD: Dec 1997
- Country of Publication:
- United States
- Language:
- English
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