Index Catalog // MDR

Description/Abstract:: Sm-Co bulk alloys are well known permanent magnets having large remanent magnetizations and coercive forces and are widely used in many i...
Keyword:: Density functional theory, First-principle calculations, Hall effect, Ferromagnetism, Magnetism, Electronic band structure, Superlattices, Thermoelectricity
Resource Type:: Article
Author:: Naoki Chiba, Keisuke Masuda, Ken-ichi Uchida, and Yoshio Miura
Journal:: Applied Physics Letters
Date Uploaded:: 12/07/2024

Description/Abstract:: In the field of spintronics, there is a strong demand for barrier materials in magnetic tunnel junctions (MTJs) having high tunnel magnet...
Keyword:: Magnetic tunnel junctions, Adiabatic quantum optimization, Quantum computation, Spintronics
Resource Type:: Article
Author:: Kenji Nawa, Tsuyoshi Suzuki, Keisuke Masuda, Shu Tanaka, and Yoshio Miura
Journal:: Physical Review Applied
Date Uploaded:: 24/05/2024

Description/Abstract:: Wedemonstrated the effectiveness of the machine learning method combined with first-principles calculations for the enhancement of the an...
Keyword:: Spin-orbit interactions, First-principle calculations, Superlattices, Informatics, Machine learning, Ferromagnetic materials, Multilayers, Thermoelectric effects
Resource Type:: Article
Author:: Naoki Chiba, Keisuke Masuda, Ken-ichi Uchida, and Yoshio Miura
Journal:: APL Machine Learning
Date Uploaded:: 24/05/2024

Description/Abstract:: The tunnel magnetoresistance (TMR) is one of the most important spintronic phenomena but its reduction at finite temperature is a severe ...
Keyword:: Exchange interaction, Magnetic tunnel junction, Spintronics, and Tunnel magnetoresistance
Resource Type:: Article
Author:: Keisuke Masuda, Terumasa Tadano, and Yoshio Miura
Journal:: Physical Review B
Date Uploaded:: 11/04/2024

Description/Abstract:: スピネルバリアを用いた磁気トンネル接合Fe/MgAl2O4/Feの電圧特性を理論的に解析し、その結果をFe/MgO/Feの電圧特性と比較した。その結果、Fe/MgAl2O4/Feでは電極でのバンド折りたたみが起こるため、磁気抵抗比の電圧耐性がFe/MgO/Feよりも高くなる...
Keyword:: Magnetic tunnel junction, Spinel, Spintronics, and Tunnel magnetoresistance
Resource Type:: Article
Author:: Keisuke Masuda and Yoshio Miura
Journal:: Physical Review B
Date Uploaded:: 11/04/2024

Description/Abstract:: We study theoretically the anisotropic magneto-Peltier effect, which was recently demonstrated experimen-tally. A first-principles-based ...
Keyword:: Peltier effect, Spin caloritronics, and Spintronics
Resource Type:: Article
Author:: Keisuke Masuda, Ken-ichi Uchida, Ryo Iguchi, and Yoshio Miura
Journal:: Physical Review B
Date Uploaded:: 11/04/2024

Description/Abstract:: 半導体バリアCuInSe2、CuGaSe2を持つ磁気トンネル接合の伝導特性を第一原理計算によって調べた。その結果、両トンネル接合でΔ1状態の波動関数のコヒーレントトンネル現象が生じ、高いMR比が得られることが分かった。
Keyword:: Magnetic tunnel junction, Spintronics, and Tunnel magnetoresistance
Resource Type:: Article
Author:: Keisuke Masuda and Yoshio Miura
Journal:: Japanese Journal of Applied Physics
Date Uploaded:: 11/04/2024

Description/Abstract:: We study interfacial magnetocrystalline anisotropies in various Fe/semiconductor heterostructures by means of first-principles calculatio...
Keyword:: Magnetic anisotropy, Magnetic tunnel junction, and Spintronics
Resource Type:: Article
Author:: Keisuke Masuda, Shinya Kasai, Yoshio Miura, and Kazuhiro Hono
Journal:: Physical Review B
Date Uploaded:: 11/04/2024

Description/Abstract:: We theoretically study the tunnel magnetoresistance (TMR) effect in (111)-oriented junctions Co/MgO/Co(111) and Ni/MgO/Ni(111). The Co-ba...
Keyword:: Magnetic tunnel junction, Spintronics, and Tunnel magnetoresistance
Resource Type:: Article
Author:: Keisuke Masuda, Hiroyoshi Itoh, and Yoshio Miura
Journal:: Physical Review B
Date Uploaded:: 11/04/2024

Description/Abstract:: We study the tunnel magnetoresistance (TMR) effect and magnetocrystalline anisotropy in a series of magnetic tunnel junctions (MTJs) with...
Keyword:: Magnetic anisotropy, Magnetic tunnel junction, Spintronics, and Tunnel magnetoresistance
Resource Type:: Article
Author:: Keisuke Masuda, Hiroyoshi Itoh, Yoshiaki Sonobe, Hiroaki Sukegawa, Seiji Mitani, and Yoshio Miura
Journal:: Physical Review B
Date Uploaded:: 11/04/2024

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