Atomic structure of functional interfaces in Sr2 RuO4/Sr3 Ru2 O7 eutectic crystals

R. Ciancio; H. Pettersson; J. Börjesson; S. Lopatin; R. Fittipaldi; A. Vecchione; S. Kittaka; Y. Maeno; S. Pace; E. Olsson

doi:10.1063/1.3243691

Atomic structure of functional interfaces in Sr2 RuO4/Sr3 Ru2 O⁷ eutectic crystals

R. Ciancio^*, H. Pettersson, J. Börjesson, S. Lopatin, R. Fittipaldi, A. Vecchione, S. Kittaka, Y. Maeno, S. Pace, E. Olsson

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

Sr2 RuO4/Sr3 Ru2 O⁷ eutectic system is investigated by transmission electron microscopy (TEM) and high angle annular dark field scanning TEM (STEM). The Sr2 RuO4 / Sr3 Ru2 O⁷ lamellar structure allows studying tunneling and proximity effects between spin-triplet superconductor Sr2 RuO4 and metamagnetic normal metal Sr3 Ru2 O⁷. 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 Sr2 RuO4 / Sr3 Ru2 O⁷ natural junctions to study the unusual superconductivity of Sr2 RuO4.

Original language	English (US)
Article number	142507
Journal	Applied Physics Letters
Volume	95
Issue number	14
DOIs	https://doi.org/10.1063/1.3243691
State	Published - 2009
Externally published	Yes

Bibliographical note

Funding Information:
MHZ is supported by grants from the National Natural Science Foundation of China ( 81500665 ). CDB is supported in part by the Southampton NIHR Biomedical Research Centre (IS-BRC-20004 ), UK. GT is supported in part by grants from the School of Medicine, University of Verona, Verona, Italy .

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Access to Document

10.1063/1.3243691

Cite this

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title = "Atomic structure of functional interfaces in Sr2 RuO4/Sr3 Ru2 O7 eutectic crystals",

abstract = "Sr2 RuO4/Sr3 Ru2 O7 eutectic system is investigated by transmission electron microscopy (TEM) and high angle annular dark field scanning TEM (STEM). The Sr2 RuO4 / Sr3 Ru2 O7 lamellar structure allows studying tunneling and proximity effects between spin-triplet superconductor Sr2 RuO4 and metamagnetic normal metal Sr3 Ru2 O7. 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 Sr2 RuO4 / Sr3 Ru2 O7 natural junctions to study the unusual superconductivity of Sr2 RuO4.",

author = "R. Ciancio and H. Pettersson and J. B{\"o}rjesson and S. Lopatin and R. Fittipaldi and A. Vecchione and S. Kittaka and Y. Maeno and S. Pace and E. Olsson",

note = "Funding Information: MHZ is supported by grants from the National Natural Science Foundation of China ( 81500665 ). CDB is supported in part by the Southampton NIHR Biomedical Research Centre (IS-BRC-20004 ), UK. GT is supported in part by grants from the School of Medicine, University of Verona, Verona, Italy . ",

year = "2009",

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volume = "95",

journal = "Applied Physics Letters",

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T1 - Atomic structure of functional interfaces in Sr2 RuO4/Sr3 Ru2 O7 eutectic crystals

AU - Ciancio, R.

AU - Pettersson, H.

AU - Börjesson, J.

AU - Lopatin, S.

AU - Fittipaldi, R.

AU - Vecchione, A.

AU - Kittaka, S.

AU - Maeno, Y.

AU - Pace, S.

AU - Olsson, E.

N1 - Funding Information: MHZ is supported by grants from the National Natural Science Foundation of China ( 81500665 ). CDB is supported in part by the Southampton NIHR Biomedical Research Centre (IS-BRC-20004 ), UK. GT is supported in part by grants from the School of Medicine, University of Verona, Verona, Italy .

PY - 2009

Y1 - 2009

N2 - Sr2 RuO4/Sr3 Ru2 O7 eutectic system is investigated by transmission electron microscopy (TEM) and high angle annular dark field scanning TEM (STEM). The Sr2 RuO4 / Sr3 Ru2 O7 lamellar structure allows studying tunneling and proximity effects between spin-triplet superconductor Sr2 RuO4 and metamagnetic normal metal Sr3 Ru2 O7. 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 Sr2 RuO4 / Sr3 Ru2 O7 natural junctions to study the unusual superconductivity of Sr2 RuO4.

AB - Sr2 RuO4/Sr3 Ru2 O7 eutectic system is investigated by transmission electron microscopy (TEM) and high angle annular dark field scanning TEM (STEM). The Sr2 RuO4 / Sr3 Ru2 O7 lamellar structure allows studying tunneling and proximity effects between spin-triplet superconductor Sr2 RuO4 and metamagnetic normal metal Sr3 Ru2 O7. 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 Sr2 RuO4 / Sr3 Ru2 O7 natural junctions to study the unusual superconductivity of Sr2 RuO4.

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