[15p-D311-1~8] 6.3 Oxide electronics

[15p-D311-6] Fabrication and magnetotransport properties of perovskite PbRuO₃ thin film

〇Takahiro Fujita¹, Lingfei Zhang¹, Masashi Kawasaki^1,2 (1.The Univ. of Tokyo, 2.RIKEN CEMS)

Keywords:Ruthenate, Antiferromagnet

Perovskite oxides (ABO₃) are prototypical oxide materials for both electronics application and fundamental science due to their wide range of functionalities. Especially ruthenates (B = Ru) have gathered attention as a typical ferromagnetic metal, and enormous effort has been devoted to clarifying the origin of magnetism in relation to A-site ion radii. Here we report on magnetotransport properties of perovskite PbRuO₃ single crystalline thin films. Perovskite PbRuO₃ has been reported to be paramagnetic with anti-ferromagnetic spin correlation, opposed to the simple prediction only from Pb²⁺ ion radius, by two groups, but they have claimed different electronic ground states contrary to each other. Despite of these intriguing features, fundamental physical properties of perovskite PbRuO₃ still remain unknown as it is synthesized only in polycrystalline bulk form under high pressure.