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Persistent URL	http://purl.org/net/epubs/work/35160
Record Status	Checked
Record Id	35160
Title	Structural aspects of metamagnetism in Ca_2-xSrxRuO₄: Evidence for field tuning of orbital occupation
Contributors	M Kriener (Universität zu Köln), P Steffens (Universität zu Köln), J Baier (Universität zu Köln), O Schumann (Universität zu Köln), T Zabel (Universität zu Köln), T Lorenz (Universität zu Köln), O Friedt (Universität zu Köln), R Muller (Universität zu Köln), A Gukasov (Laboratoire Léon Brillouin, Gif-sur-Yvette), PG Radaelli (ISIS), P Reutler (RWTH Aachen), A Revcolevschi (Université Paris Sud), S Nakatsuji (Kyoto University), Y Maeno (Kyoto University), M Braden (Universität zu Köln)
Abstract	The crystal structure of Ca<sub>2-x</sub>SrxRuO<sub>4</sub> with 0.2 <= x <= 1.0 has been studied by diffraction techniques and by high resolution capacitance dilatometry as a function of temperature and magnetic field. Upon cooling in zero magnetic field, the crystal structure and the octahedra shrink along the c direction and elongate in the a and b planes, whereas the opposite occurs upon cooling at high field (x = 0.2 and 0.5). These findings yield evidence for an orbital rearrangement driven by temperature and magnetic field, which accompanies the metamagnetic transition at low temperature. The temperature and magnetic-field dependencies are found to be governed by the same energy scale.
Organisation	CCLRC , ISIS , ISIS-GEM
Keywords	Physics , neutron powder diffraction , Magnetism , orbital ordering , ISIS 2006
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Language	English (EN)

Type	Details	URI(s)	Local file(s)	Year
Journal Article	Phys Rev Lett 95 (2005): 267403.	doi:10.1103/PhysRevLett.95.267403		2005