Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Yasuhiro Futakawa"'
Autor:
Yaroslav Tserkovnyak, Arata Tsukamoto, Teruo Ono, Woo Seung Ham, Duck-Ho Kim, Hiroki Yoshikawa, Kyung Jin Lee, Kab-Jin Kim, Yasuhiro Futakawa, Takahiro Moriyama, Takaya Okuno, Tomoe Nishimura, Se Hyeok Oh, Yuushou Hirata, Se Kwon Kim, Yoichi Shiota
Publikováno v:
Nature Electronics. 2:389-393
Antiferromagnetic materials are outstanding candidates for next generation spintronic applications, because their ultrafast spin dynamics makes it possible to realize several orders of magnitude higher-speed devices than conventional ferromagnetic ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c8b0036007d0a5de7c3508f232b897e0
https://doi.org/10.1038/s41928-019-0303-5
https://doi.org/10.1038/s41928-019-0303-5
Autor:
Hyeon-Jong Park, Hiroki Yoshikawa, Kyung Jin Lee, Yuushou Hirata, Hye Won Ko, Takahiro Moriyama, Yasuhiro Futakawa, Duck-Ho Kim, Hiroki Kurata, Takaya Okuno, Sug-Bong Choe, Teruo Ono, Wooseung Ham, Yoichi Shiota, Arata Tsukamoto, Gyungchoon Go, Tomoe Nishimura, Sanghoon Kim, Dae-Yun Kim, Mitsutaka Haruta
Publikováno v:
Nature Materials. 18:685-690
Symmetry breaking is a fundamental concept that prevails in many branches of physics1–5. In magnetic materials, broken inversion symmetry induces the Dzyaloshinskii–Moriya interaction (DMI), which results in fascinating physical behaviours6–14
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::840f9c097e6d2a42c89766708d5a3f7b
https://doi.org/10.1038/s41563-019-0380-x
https://doi.org/10.1038/s41563-019-0380-x
Autor:
Dae-Yun Kim, Se Kwon Kim, Teruo Ono, Sug-Bong Choe, Yasuhiro Futakawa, Takaya Okuno, Dongkyu Lee, Duck-Ho Kim, Tomoe Nishimura, Se Hyeok Oh, Yaroslav Tserkovnyak, Yoichi Shiota, Hiroki Yoshikawa, Kyung Jin Lee, Yuushou Hirata, Arata Tsukamoto, Takahiro Moriyama
Publikováno v:
Extended Abstracts of the 2019 International Conference on Solid State Devices and Materials.
Charged particles exhibit the Hall effect in the presence of magnetic fields. Analogously, ferromagnetic skyrmions with non-zero topological charges and finite fictitious magnetic fields exhibit the skyrmion Hall effect, which is detrimental for appl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f00186f7cc1a2d38f66e5d864aa6464d
https://doi.org/10.7567/ssdm.2019.n-7-02
https://doi.org/10.7567/ssdm.2019.n-7-02
Autor:
Dae-Yun Kim, Yuushou Hirata, Yasuhiro Futakawa, Duck-Ho Kim, Takaya Okuno, Teruo Ono, Kab-Jin Kim, Tomoe Nishimura, Sug-Bong Choe, Hiroki Yoshikawa, Arata Tsukamoto
Determining the angular momentum compensation temperature of ferrimagnets is an important step towards ferrimagnetic spintronics, but is not generally easy to achieve it experimentally. We propose a way to estimate the angular momentum compensation t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a29c164a059a12231deeff3fc4cb5fd0
http://arxiv.org/abs/1710.07779
http://arxiv.org/abs/1710.07779
Autor:
Yuushou Hirata, Duck-Ho Kim, Hiroki Yoshikawa, Wooseung Ham, Takaya Okuno, Kab-Jin Kim, Takahiro Moriyama, Teruo Ono, Yasuhiro Futakawa, Tomoe Nishimura, Yoichi Shiota, Arata Tsukamoto, Sanghoon Kim
Publikováno v:
Applied Physics Express. 11:063001
The domain-wall (DW) motion of ferrimagnets is investigated with respect to the angular-momentum-compensation temperature T A for a wide range of magnetic fields μ0 H z , ranging from the depinning to flow regimes. While the DW velocity v exhibits a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::756e9ac40a7d02c690f9e33026a86034
https://doi.org/10.7567/apex.11.063001
https://doi.org/10.7567/apex.11.063001
Autor:
Duck-Ho Kim, Hiroki Yoshikawa, Takahiro Moriyama, Yuushou Hirata, Tomoe Nishimura, Arata Tsukamoto, Yoichi Shiota, Takaya Okuno, Teruo Ono, Yasuhiro Futakawa
Publikováno v:
Applied Physics Letters. 112:172403
The influence of temperature on the magnetic-field-driven domain wall (DW) motion is investigated in GdFeCo ferrimagnets with perpendicular magnetic anisotropy (PMA). We find that the depinning field strongly depends on temperature. Moreover, it is a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f73eddf5d2aa41fa525fca95059c342a
https://doi.org/10.1063/1.5022809
https://doi.org/10.1063/1.5022809
Autor:
Takaya Okuno, Hiroki Yoshikawa, Arata Tsukamoto, Teruo Ono, Tomoe Nishimura, Takahiro Moriyama, Duck-Ho Kim, Yasuhiro Futakawa, Yoichi Shiota, Sanghoon Kim, Yuushou Hirata
Publikováno v:
Japanese Journal of Applied Physics. 57:050308
We propose an alternative method of determining the magnetic anisotropy field μ0 H K in ferro-/ferrimagnets. On the basis of the droplet nucleation model, there exists linearity between domain-wall (DW) energy density and in-plane magnetic field. We
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee3b77fb2d0692545c7f375cedb5d228
https://doi.org/10.7567/jjap.57.050308
https://doi.org/10.7567/jjap.57.050308
Autor:
Tomoe Nishimura, Duck-Ho Kim, Takaya Okuno, Yuushou Hirata, Yasuhiro Futakawa, Hiroki Yoshikawa, Sanghoon Kim, Arata Tsukamoto, Yoichi Shiota, Takahiro Moriyama, Teruo Ono
Publikováno v:
Japanese Journal of Applied Physics; May2018, Vol. 57 Issue 5, p1-1, 1p
Autor:
Okuno, Takaya, Kim, Duck-Ho, Oh, Se-Hyeok, Kim, Se Kwon, Hirata, Yuushou, Nishimura, Tomoe, Ham, Woo Seung, Futakawa, Yasuhiro, Yoshikawa, Hiroki, Tsukamoto, Arata, Tserkovnyak, Yaroslav, Shiota, Yoichi, Moriyama, Takahiro, Kim, Kab-Jin, Lee, Kyung-Jin, Ono, Teruo
Publikováno v:
Nature Electronics; Sep2019, Vol. 2 Issue 9, p389-393, 5p
Autor:
Nishimura, Tomoe, Kim, Duck-Ho, Hirata, Yuushou, Okuno, Takaya, Futakawa, Yasuhiro, Yoshikawa, Hiroki, Tsukamoto, Arata, Shiota, Yoichi, Moriyama, Takahiro, Ono, Teruo
Publikováno v:
Applied Physics Letters; 4/23/2018, Vol. 112 Issue 17, pN.PAG-N.PAG, 4p, 1 Diagram, 2 Charts, 4 Graphs