Topological conduction in magnetic oxides

2017 Fiscal Year Final Research Report

• Project/Area Number: 16K13682
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Thin film/Surface and interfacial physical properties
• Research Institution: The University of Tokyo
• Principal Investigator: Kozuka Yusuke 東京大学, 大学院工学系研究科(工学部), 講師 (70580372)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Keywords: 酸化物薄膜 / 電子相関 / スピン軌道相互作用

Outline of Final Research Achievements

For conventional spintronic elements, ferromagnetic materials have been mainly used. However, with using antiferromagnetic materials, elements with less power consumption can be fabricated owing to smaller effects of stray field. In this study, we aim at controlling magnetic domains and conducting layers at the domain boundary of pyrochlore iridates, where a spin configuration called all-in-all-out is realized. As a result, we succeeded in independently controlling the magnetic domains of each layer of a pyrochlore iridate heterostructure. In addition, we find conducting layer at the artificial magnetic domain walls. In this study, we demonstrate successful control of antiferromagnetic domains.

Free Research Field

酸化物エレクトロニクス