Atomic structure of functional interfaces in Sr2RuO4/Sr3Ru2O7 eutectic crystals
Journal article, 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
Author
Regina Ciancio
Laboratorio Regionale SUPERMAT
Chalmers
Henrik Pettersson
Chalmers, Applied Physics, Microscopy and Microanalysis
Johan Börjesson
Chalmers, Applied Physics, Microscopy and Microanalysis
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, Applied Physics, Microscopy and Microanalysis
Applied Physics Letters
0003-6951 (ISSN) 1077-3118 (eISSN)
Vol. 95 14 142507 (artno)- 142507Subject Categories
Other Engineering and Technologies not elsewhere specified
DOI
10.1063/1.3243691