http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Vanishing skyrmion Hall effect at the angular momentum compensation temperature of a ferrimagnet
Hirata, Yuushou,Kim, Duck-Ho,Kim, Se Kwon,Lee, Dong-Kyu,Oh, Se-Hyeok,Kim, Dae-Yun,Nishimura, Tomoe,Okuno, Takaya,Futakawa, Yasuhiro,Yoshikawa, Hiroki,Tsukamoto, Arata,Tserkovnyak, Yaroslav,Shiota, Yoi Springer Science and Business Media LLC 2019 Nature nanotechnology Vol.14 No.3
Vanishing skyrmion Hall effect at the angular momentum compensation temperature of a ferrimagnet
Duck-Ho Kim,Yuushou Hirata,Se Kwon Kim,Dong-Kyu Lee,Se-Hyeok Oh,Dae-Yun Kim,Tomoe Nishimura,Takaya Okuno,Yasuhiro Futakawa,Hiroki Yoshikawa,Arata Tsukamoto,Yaroslav Tserkovnyak,Yoichi Shiota,Takahiro 한국자기학회 2018 한국자기학회 학술연구발표회 논문개요집 Vol.2018 No.11
Kim, Kab-Jin,Kim, Se Kwon,Hirata, Yuushou,Oh, Se-Hyeok,Tono, Takayuki,Kim, Duck-Ho,Okuno, Takaya,Ham, Woo Seung,Kim, Sanghoon,Go, Gyoungchoon,Tserkovnyak, Yaroslav,Tsukamoto, Arata,Moriyama, Takahiro Nature Publishing Group 2017 NATURE MATERIALS Vol.16 No.12
Antiferromagnetic spintronics is an emerging research field which aims to utilize antiferromagnets as core elements in spintronic devices. A central motivation towards this direction is that antiferromagnetic spin dynamics is expected to be much faster than its ferromagnetic counterpart. Recent theories indeed predicted faster dynamics of antiferromagnetic domain walls (DWs) than ferromagnetic DWs. However, experimental investigations of antiferromagnetic spin dynamics have remained unexplored, mainly because of the magnetic field immunity of antiferromagnets. Here we show that fast field-driven antiferromagnetic spin dynamics is realized in ferrimagnets at the angular momentum compensation point T<SUB>A</SUB>. Using rare earth–3d-transition metal ferrimagnetic compounds where net magnetic moment is nonzero at T<SUB>A</SUB>, the field-driven DW mobility is remarkably enhanced up to 20 km s<SUP>−1</SUP> T<SUP>−1</SUP>. The collective coordinate approach generalized for ferrimagnets and atomistic spin model simulations show that this remarkable enhancement is a consequence of antiferromagnetic spin dynamics at T<SUB>A</SUB>. Our finding allows us to investigate the physics of antiferromagnetic spin dynamics and highlights the importance of tuning of the angular momentum compensation point of ferrimagnets, which could be a key towards ferrimagnetic spintronics.