Universität zu Köln

Kunkemoeller, S., Nugroho, A. A., Sidis, Y. and Braden, M. (2014). Spin-density-wave ordering in Ca0.5Sr1.5RuO4 studied by neutron scattering. Phys. Rev. B, 89 (4). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1550-235X

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Abstract

The spin-density-wave ordering in Ca0.5Sr1.5RuO4 was studied by polarized and unpolarized neutron diffraction experiments. Below about 20 K Ca0.5Sr1.5RuO4 exhibits quasistatic correlations at exactly the incommensurate wave vector at which pure Sr2RuO4 shows strong inelastic fluctuations driven by Fermi-surface nesting. The magnetic character of the signal and the orientation of the ordered moments along the c direction can be ascertained by neutron polarization analysis. The magnetic ordering at low temperature is very similar to that found upon minor Ti substitution of Sr2RuO4, underlining that this incommensurate spin density wave is the dominant magnetic instability of the unconventional superconductor Sr2RuO4.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Kunkemoeller, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Nugroho, A. A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sidis, Y. UNSPECIFIED UNSPECIFIED UNSPECIFIED Braden, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-448530
DOI:	10.1103/PhysRevB.89.045119
Journal or Publication Title:	Phys. Rev. B
Volume:	89
Number:	4
Date:	2014
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	1550-235X
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language MOTT TRANSITION; CRYSTAL-GROWTH; SR2RUO4; CA2RUO4; SUPERCONDUCTIVITY; CA2-XSR(X)RUO4; FLUCTUATIONS; RUTHENATE Multiple languages Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/44853