Atomic structure of functional interfaces in Sr2RuO4/Sr3Ru2O7 eutectic crystals
Artikel i vetenskaplig tidskrift, 2009

Sr2RuO4/Sr3Ru2O7 eutectic system is investigated by transmission electron microscopy (TEM) and high angle annular dark field scanning TEM (STEM). The Sr2RuO4/Sr3Ru2O7 lamellar structure allows studying tunneling and proximity effects between spin-triplet superconductor Sr2RuO4 and metamagnetic normal metal Sr3Ru2O7. Our analyses reveal two typologies of interfaces within the eutectic: interfaces parallel to the growth direction are sharp and defect-free whereas interfaces perpendicular to the growth direction appear wavy and decorated with Ru precipitates. These results indicate that interfaces parallel to the growth direction are the best candidates for Sr2RuO4/Sr3Ru2O7 natural junctions to study the unusual superconductivity of Sr2RuO4. (C) 2009 American Institute of Physics. [doi: 10.1063/1.3243691]

phase

growth

sr3ru2o7

superconductivity

dependence

sr2ruo4

disorder

Författare

Regina Ciancio

Laboratorio Regionale SUPERMAT

Chalmers

Henrik Pettersson

Chalmers, Teknisk fysik, Mikroskopi och mikroanalys

Johan Börjesson

Chalmers, Teknisk fysik, Mikroskopi och mikroanalys

S. Lopatin

FEI Company

R. Fittipaldi

Laboratorio Regionale SUPERMAT

A. Vecchione

Laboratorio Regionale SUPERMAT

S. Kittaka

Kyoto University

Y. Maeno

Kyoto University

S. Pace

Laboratorio Regionale SUPERMAT

Eva Olsson

Chalmers, Teknisk fysik, Mikroskopi och mikroanalys

Applied Physics Letters

0003-6951 (ISSN) 1077-3118 (eISSN)

Vol. 95 14 142507 (artno)-

Ämneskategorier

Övrig annan teknik

DOI

10.1063/1.3243691