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Evidence for long localization length along b Axis PrBa2Cu3O7 in a Axis YBa2Cu3O7a,b Axis PrBa2Cu3O7 Superlattices

Published inPhysical Review Letters, vol. 73, no. 2, p. 328-331
Publication date1994
Abstract

We have investigated resistive transitions of a axis YBa₂Cu₃O₇/a,b axis PrBa₂Cu₃O₇ superlattices in a magnetic field to study the correlation length of vortices along the a axis direction of YBa₂Cu₃O₇ across an a,b-axis oriented PrBa₂Cu₃O₇ barrier. The correlation of vortices across up to 480 Å of PrBa₂Cu₃O₇ is evidence consistent with long proximity coupling coherence lengths in PrBa₂Cu₃O₇ found in sandwich type YBa₂Cu₃O₇/PrBa₂Cu₃O₇/YBa₂Cu₃O₇ Josephson junctions. Investigation of a-b plane and b axis transport of undoped and cobalt doped PrBa₂Cu₃O₇ films suggests that a long localization length along the b axis of PrBa₂Cu₃O₇ is the origin of this long range proximity coupling.

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Citation (ISO format)
SUZUKI, Y. et al. Evidence for long localization length along <i>b</i> Axis PrBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub> in <i>a</i> Axis YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub><i>a</i>,<i>b</i> Axis PrBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub> Superlattices. In: Physical Review Letters, 1994, vol. 73, n° 2, p. 328–331. doi: 10.1103/PhysRevLett.73.328
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ISSN of the journal0031-9007
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