The 70th JSAP Spring Meeting 2023

Presentation information

Oral presentation

10 Spintronics and Magnetics » 10.2 Fundamental and exploratory device technologies for spin

[18a-D704-1~11] 10.2 Fundamental and exploratory device technologies for spin

Sat. Mar 18, 2023 9:00 AM - 12:00 PM D704 (Building No. 11)

Minori Goto(Osaka Univ.), Shinji Isogami(NIMS)

9:45 AM - 10:00 AM

[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)

Keywords: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.