Zobrazeno 1 - 10
of 159
pro vyhledávání: '"Takahide, Kubota"'
Autor:
Atsufumi Hirohata, David C. Lloyd, Takahide Kubota, Takeshi Seki, Koki Takanashi, Hiroaki Sukegawa, Zhenchao Wen, Seiji Mitani, Hiroki Koizumi
Publikováno v:
IEEE Access, Vol 11, Pp 117443-117459 (2023)
Spintronic devices are expected to replace the recent nanoelectronic memories and sensors due to their efficiency in energy consumption and functionality with scalability. To date, spintronic devices, namely magnetoresistive junctions, employ ferroma
Externí odkaz:
https://doaj.org/article/efedf8a4044a4baab293205a12d3fb4f
Autor:
Iduru Shigeta, Shuta Oku, Takahide Kubota, Shojiro Kimura, Takeshi Seki, Bunju Shinozaki, Satoshi Awaji, Koki Takanashi, Masahiko Hiroi
Publikováno v:
AIP Advances, Vol 13, Iss 2, Pp 025116-025116-5 (2023)
Superconducting properties were investigated in epitaxially layered films consisting of superconductor NbN and half-metallic Heusler alloy Co2MnSi (CMS). Temperature dependence of the electrical resistivity ρ(T) was measured by applying perpendicula
Externí odkaz:
https://doaj.org/article/317e32d9f922404ebbc2cc9f516cf202
Autor:
Kelvin Elphick, William Frost, Marjan Samiepour, Takahide Kubota, Koki Takanashi, Hiroaki Sukegawa, Seiji Mitani, Atsufumi Hirohata
Publikováno v:
Science and Technology of Advanced Materials, Vol 22, Iss 1, Pp 235-271 (2021)
Heusler alloys are theoretically predicted to become half-metals at room temperature (RT). The advantages of using these alloys are good lattice matching with major substrates, high Curie temperature above RT and intermetallic controllability for spi
Externí odkaz:
https://doaj.org/article/142bb71960bc46c98ad4f45a8f4a2569
Publikováno v:
AIP Advances, Vol 11, Iss 1, Pp 015124-015124-5 (2021)
Magnetic thin films showing high perpendicular magnetic anisotropy, Ku, and low saturation magnetization, Ms, are essential for realizing a small switching current in spintronic devices utilizing the current induced magnetization switching phenomena.
Externí odkaz:
https://doaj.org/article/88d61acc53304e7e8074e90943636a91
Autor:
Takahide Kubota, Yohei Kota, Keita Ito, Rie Y. Umetsu, Mingling Sun, Masaki Mizuguchi, Koki Takanashi
Publikováno v:
AIP Advances, Vol 10, Iss 1, Pp 015122-015122-5 (2020)
Cu2Sb-type intermetallic compound, MnAlGe, is known to exhibit uniaxial magnetocrystalline anisotropy and relatively small saturation magnetization, which is suitable for spintronic application, e.g. spin-transfer phenomena requiring small critical c
Externí odkaz:
https://doaj.org/article/f5a6f15c446047d0894ef5dd33652c42
Autor:
Sarah Heidtfeld, Roman Adam, Takahide Kubota, Koki Takanashi, Derang Cao, Carolin Schmitz-Antoniak, Daniel E. Bürgler, Fangzhou Wang, Christian Greb, Genyu Chen, Ivan Komissarov, Hilde Hardtdegen, Martin Mikulics, Roman Sobolewski, Shigemasa Suga, Claus M. Schneider
Publikováno v:
Physical Review Research, Vol 3, Iss 4, p 043025 (2021)
We generated pulses of electromagnetic radiation in the terahertz (THz) frequency range by optical excitation of Co_{2}Fe_{0.4}Mn_{0.6}Si (CFMS)/normal-metal (NM) bilayer structures. The CFMS is a Heusler alloy showing a band gap in one spin channel
Externí odkaz:
https://doaj.org/article/6f8082f62895429cb6753dd9d920d87e
Autor:
Takahide Kubota, Yusuke Shimada, Tomoki Tsuchiya, Tomoki Yoshikawa, Keita Ito, Yukiharu Takeda, Yuji Saitoh, Toyohiko J. Konno, Akio Kimura, Koki Takanashi
Publikováno v:
Nanomaterials, Vol 11, Iss 7, p 1723 (2021)
Heusler alloys are a material class exhibiting various magnetic properties, including antiferromagnetism. A typical application of antiferromagnets is exchange bias that is a shift of the magnetization curve observed in a layered structure consisting
Externí odkaz:
https://doaj.org/article/2279de7f47994f4e97d7c94ef99bcb70
Autor:
Ruma Mandal, Ivan Kurniawan, Ippei Suzuki, Zhenchao Wen, Yoshio Miura, Takahide Kubota, Koki Takanashi, Tadakatsu Ohkubo, Kazuhiro Hono, Yukiko K Takahashi
Publikováno v:
ACS Applied Nano Materials. 5:569-577
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e85cf4353fe9b9e0d3a261d7a4b32e0
https://doi.org/10.1021/acsanm.1c03378
https://doi.org/10.1021/acsanm.1c03378
Publikováno v:
SPIN. 13
One avenue toward next-generation spintronic devices is to develop half-metallic ferromagnets with 100% spin polarization and Curie temperature above room temperature. Half-metallic ferromagnets have unique density of states, where the majority spins
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1446a1f038027b8026b0a8130c219983
https://doi.org/10.1142/s2010324723500078
https://doi.org/10.1142/s2010324723500078
Autor:
Daniel Steil, Jakob Walowski, Felicitas Gerhard, Tobias Kiessling, Daniel Ebke, Andy Thomas, Takahide Kubota, Mikihiko Oogane, Yasuo Ando, Johannes Otto, Andreas Mann, Moritz Hofherr, Peter Elliott, John Kay Dewhurst, Günter Reiss, Laurens Molenkamp, Martin Aeschlimann, Mirko Cinchetti, Markus Münzenberg, Sangeeta Sharma, Stefan Mathias
Publikováno v:
Physical Review Research, Vol 2, Iss 2, p 023199 (2020)
Optically induced spin transfer (OISTR) is a pathway to control magnetization dynamics in complex materials on femto- to attosecond timescales. The direct interaction of the laser field with the material creates transient nonequilibrium states, which
Externí odkaz:
https://doaj.org/article/c86e0dd33d5a40fab64922ed74cd6eee