Superconductivity in Sr2RuO4-Sr3Ru2O7 eutectic crystals
Journal article, 2008

Superconducting behavior has been observed in the Sr2RuO4-Sr3Ru2O7 eutectic system as grown by the flux-feeding floating-zone technique. A supercurrent flows across a single interface between Sr2RuO4 and Sr3Ru2O7 areas at distances that are far beyond those expected in a conventional proximity effect. The current-voltage characteristics within the Sr3Ru2O7 macrodomain, as extracted from the eutectic, exhibit signatures of superconductivity in the bilayered Sr3Ru2O7 region. Detailed microstructural, morphological and compositional analyses address issues on the concentration and the size of Sr2RuO4 inclusions within the Sr3Ru2O7 matrix. We speculate on the possibility of inhomogeneous superconductivity in the eutectic Sr3Ru2O7 and exotic pairing induced by the Sr2RuO4 inclusions. Copyright (C) EPLA, 2008.

SR2RUO4

SR3RU2O7

Author

R. Fittipaldi

Istituto Nazionale per la Fisica della Materia

University of Salerno

A. Vecchione

University of Salerno

Istituto Nazionale per la Fisica della Materia

Regina Ciancio

Istituto Nazionale per la Fisica della Materia

University of Salerno

Chalmers

S. Pace

University of Salerno

Istituto Nazionale per la Fisica della Materia

M. Cuoco

University of Salerno

Istituto Nazionale per la Fisica della Materia

D. Stornaiuolo

Universita degli Studi di Napoli Federico II

D. Born

Universita degli Studi di Napoli Federico II

F. Tafuri

Universita degli Studi di Napoli Federico II

Università degli Studi della Campania Luigi Vanvitelli

Eva Olsson

Chalmers, Applied Physics, Microscopy and Microanalysis

S. Kittaka

Kyoto University

H. Yaguchi

Kyoto University

Y. Maeno

Kyoto University

Europhysics Letters

0295-5075 (ISSN) 1286-4854 (eISSN)

Vol. 83 2 Art. no. 27007-

Subject Categories

Other Engineering and Technologies

DOI

10.1209/0295-5075/83/27007

More information

Latest update

9/10/2018