Systematic study of anisotropic Josephson coupling between YBa2Cu3O7−x and PbIn using in-plane aligned a-axis films

I. Takeuchi; Y. Gim; F. C. Wellstood; C. J. Lobb; Z. Trajanovic; T. Venkatesan

doi:10.1103/PhysRevB.59.7205

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Systematic study of anisotropic Josephson coupling between YBa2Cu3O7−x and PbIn using in-plane aligned a-axis films

I. Takeuchi, Y. Gim, F. C. Wellstood, C. J. Lobb, Z. Trajanovic, T. Venkatesan

DOI 10.1103/PhysRevB.59.7205 · Physical Review B

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Abstract

We have fabricated YBa2Cu3O7−x (YBCO)/Au/Ag/PbIn edge junctions using in-plane aligned a-axis oriented films in order to study the anisotropic coupling between YBCO and PbIn. Seven junctions were made in different directions spanning the b−c plane of YBCO on each chip. Current-voltage characteristics show a systematic change as a function of the angle of the junction direction relative to the YBCO crystal axes. We analyze the results using a superconductor–insulator–normal-metal interface model with anisotropic YBCO/Au interface resistance and discuss implications for measuring the out-of-CuO2 plane order parameter of YBCO.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7-x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	88	Pressure not reported	unknown