Uniaxial-Pressure induced Ferromagnetism of Enhanced Paramagnetic Sr3Ru2O7

Details Uniaxial-Pressure induced Ferromagnetism of Enhanced Paramagnetic Sr3Ru2O7 Uniaxial-Pressure induced Ferromagnetism of Enhanced Paramagnetic Sr3Ru2O7

2004-03-02

arxiv.org/abs/cond-mat/0403074v1

Physics

Condensed Matter

Strongly Correlated Electrons

8 pages, 3 figures. to be published in Journal of the Physical Society of Japan, vol.73, No.5 (2004)

Scientific paper

10.1143/JPSJ.73.1322

We report a uniaxial pressure-dependence of magnetism in layered perovskite strontium ruthenate Sr3Ru2O7. By applying a relatively small uniaxial pressure, greater than 0.1 GPa normal to the RuO2 layer, ferromagnetic ordering manifests below 80 K from the enhanced-paramagnet. Magnetization at 1 kOe and 2 K becomes 100 times larger than that under ambient condition. Uniaxial pressure dependence of Curie temperature T_C suggests the first order magnetic transition. Origin of this uniaxial-pressure induced ferromagnetism is discussed in terms of the rotation of RuO6 octahedra within the RuO2 plane.

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