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The phase-diagram of Ca2-xSrxRuO4: Relation between crystal distortions and physical properties

Published online by Cambridge University Press:  01 February 2011

M. Braden ,
O. Friedt ,
O. Schumann ,
J. Baier ,
P. Steffens ,
M. Kriener ,
T. Lorenz ,
F. Bourée ,
G. André  and
A. Gukasov
...Show all authors
M. Braden
Affiliation:
II. Physikalisches Institut, Universität zu Köln, Zülpicher Str. 77, 50937 Köln, Germany
O. Friedt
Affiliation:
II. Physikalisches Institut, Universität zu Köln, Zülpicher Str. 77, 50937 Köln, Germany Laboratoire Leon Brillouin, CE-Saclay, Gif-sur-Yvette, Cedex, France
O. Schumann
Affiliation:
II. Physikalisches Institut, Universität zu Köln, Zülpicher Str. 77, 50937 Köln, Germany
J. Baier
Affiliation:
II. Physikalisches Institut, Universität zu Köln, Zülpicher Str. 77, 50937 Köln, Germany
P. Steffens
Affiliation:
II. Physikalisches Institut, Universität zu Köln, Zülpicher Str. 77, 50937 Köln, Germany
M. Kriener
Affiliation:
II. Physikalisches Institut, Universität zu Köln, Zülpicher Str. 77, 50937 Köln, Germany
T. Lorenz
Affiliation:
II. Physikalisches Institut, Universität zu Köln, Zülpicher Str. 77, 50937 Köln, Germany
F. Bourée
Affiliation:
Laboratoire Leon Brillouin, CE-Saclay, Gif-sur-Yvette, Cedex, France
G. André
Affiliation:
Laboratoire Leon Brillouin, CE-Saclay, Gif-sur-Yvette, Cedex, France
A. Gukasov
Affiliation:
Laboratoire Leon Brillouin, CE-Saclay, Gif-sur-Yvette, Cedex, France
P. G. Radaelli
Affiliation:
ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX, United Kingdom Department of Physics and Astronomy, University College London, London WC1E 6BT, United Kingdom
S. Nakatsuji
Affiliation:
Department of Physics, Kyoto University, Kyoto 606–8502, Japan
Y. Maeno
Affiliation:
Department of Physics, Kyoto University, Kyoto 606–8502, Japan
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Abstract

The phase-diagram of Ca2-xSrxRuO4 has been studied by several diffraction techniques as function of concentration, temperature, pressure and magnetic field. The substitution of Sr through the smaller Ca induces a series of structural phase transitions with a strong impact on the physical properties. The spin triplet superconductor Sr2RuO4 exhibits an undistorted crystal structure, and the Mott-insulator Ca2RuO4 strong structural distortions. For intermediate structural distortions samples stay metallic but with outstanding properties. Throughout the phase diagram we find a close coupling between the crystal structure on one side and magnetic and electronic behavior on the other side.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 840: Symposium Q – Neutron and X-Ray Scattering as Probes of Multiscale Phenomena , 2004 , Q4.1
Copyright
Copyright © Materials Research Society 2005

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References

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