[7p-A202-1~15] 6.3 Oxide electronics

[7p-A202-3] Visualizing All-In-All-Out Antiferromagnetic Domains of a Tb₂Ir₂O₇ Thin Film Utilizing Scanning SQUID Microscopy

〇Yusuke Kozuka¹, Takahiro Fujita¹, Masaki Uchida¹, Tsutomu Nojima², Atsushi Tsukazaki², Jobu Matsuno³, Taka-hisa Arima^3,4, Masashi Kawasaki^1,3 (1.Dept. Appl. Phys., Univ. Tokyo, 2.IMR, Tohoku Univ., 3.RIKEN-CEMS, 4.Dept. Adv. Mater. Sci., Univ. Tokyo)

Keywords:iridium, spin-orbit interaction, topological

Pyrochlore iridates (Ln₂Ir₂O₇, Ln: rare-earth) have been studied as a new electronic material utilizing topological electronic structure originating from coexistence of relatively strong electron correlation and spin-orbit interaction. In this study, we study stable magnetic domains of a Tb₂Ir₂O₇ thin film after field cooling (~0.1 T) utilizing scanning SQUID microscopy. As a result, we show that one of the magnetic domains is selectively stabilized by field cooling from a temperature above 120 K, where Ir spin orders.