2023年第70回応用物理学会春季学術講演会

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一般セッション(口頭講演)

10 スピントロニクス・マグネティクス » 10.2 スピン基盤技術・萌芽的デバイス技術

[18a-D704-1~11] 10.2 スピン基盤技術・萌芽的デバイス技術

2023年3月18日(土) 09:00 〜 12:00 D704 (11号館)

後藤 穣(阪大)、磯上 慎二(物材機構)

09:45 〜 10:00

[18a-D704-4] Observation of superfluid-like spin transport in NiO

〇(M2)Itaru Sugiura1、Yuta Kobayashi1、Koki Sugi1、Ryusuke Hisatomi1,2,3、Yoichi Shiota1,2、Teruo Ono1,2、Takahiro Moriyama1,2,3 (1.ICR, Kyoto Univ.、2.CSRN, Kyoto Univ.、3.PRESTO, JST)

キーワード:spin current, antiferromagnet

Long-distance and low-dissipation spin transport is a crucial goal for spintronics where flow of spin angular momentum is considered as an information carrier. Spin waves, collective excitations of magnetization dynamics, have been widely investigated as they can carry spin angular momenta. On the other hand, it has been theoretically predicted that when magnetization dynamics is confined in a two dimensional space and undergoes a rotational symmetry, spin angular momenta can be transported in a low dissipative mode, which is the so-called spin superfluidity. In this study, we investigated the spin transport in a magnetic easy-plane of an antiferromagnetic NiO thin film where magnetization dynamics is confined while satisfying the requirements for spin superfluidity.