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.
@article{arxiv.cond-mat/0403074,
title = {Uniaxial-Pressure induced Ferromagnetism of Enhanced Paramagnetic Sr3Ru2O7},
author = {Shin-Ichi Ikeda and Naoki Shirakawa and Takashi Yanagisawa and Yoshiyuki Yoshida and Shigeru Koikegami and Soh Koike and Masashi Kosaka and Yoshiya Uwatoko},
journal= {arXiv preprint arXiv:cond-mat/0403074},
year = {2009}
}
Comments
8 pages, 3 figures. to be published in Journal of the Physical Society of Japan, vol.73, No.5 (2004)