Index Catalog // MDR

Stroboscopic time-of-flight neutron diffraction in long pulsed magnetic fields

Description/Abstract:: We present proof-of-principle experiments of stroboscopic time-of-flight (TOF) neutron diffraction in long pulsed magnetic fields. By uti...
Keyword:: frustration, neutron diffraction, and pulsed magnetic field
Resource Type:: Article
Author:: Taro Nakajima, Masao Watanabe, Yasuhiro Inamura, Kazuki Matsui, Tomoki Kanda, Tetsuya Nomoto, Kazuki Ohishi, Yukihiko Kawamura, Hiraku Saito, Hiromu Tamatsukuri, Noriki Terada, and Yoshimitsu Kohama
Journal:: Physical Review Research
Date Uploaded:: 09/05/2024

Two displacive ferroelectric phase transitions in multiferroic quadruple perovskite <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>Bi</mml:mi><mml:msub><mml:mi mathvariant="normal">Mn</mml:mi><mml:mn>7</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mn>12</mml:mn></mml:msub></mml:mrow></mml:math>

Description/Abstract:: We report on the microwave, terahertz (THz), infrared and Raman spectroscopic studies of BiMn7O12 ceramics, shedding more light into the ...
Keyword:: BiMn7O12, ferroelectric transition, multiferroic, and perovskites
Resource Type:: Article
Author:: A. Maia, M. Kempa, V. Bovtun, R. Vilarinho, C. Kadlec, J. Agostinho Moreira, A. A. Belik, P. Proschek, and S. Kamba
Journal:: Physical Review B
Date Uploaded:: 02/05/2024

Magnetotransport properties in van der Waals <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>R</mml:mi><mml:msub><mml:mi>Te</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mo>(</mml:mo><mml:mi>R</mml:mi><mml:mo>=</mml:mo><mml:mi>La</mml:mi><mml:mo>,</mml:mo><mml:mo> </mml:mo><mml:mi>Ce</mml:mi><mml:mo>,</mml:mo><mml:mo> </mml:mo><mml:mi>Tb</mml:mi><mml:mo>)</mml:mo></mml:math>

Description/Abstract:: Rare-earth tritellurides are van-der-Waals antiferromagnets which have been attracting attention as materials not only with high mobility...
Keyword:: Antiferromagnetism, Charge density waves, Hall effect, Magnetic thin films, Magnetoresistance, Rare-earth magnetic materials, and Shubnikov-de Haas effect
Resource Type:: Article
Author:: Tomo Higashihara, Ryotaro Asama, Ryoya Nakamura, Mori Watanabe, Nanami Tomoda, Thomas Johannes Hasiweder, Yuita Fujisawa, Yoshinori Okada, Takuya Iwasaki, Kenji Watanabe, Takashi Taniguchi, Nan Jiang, and Yasuhiro Niimi
Journal:: Physical Review B
Date Uploaded:: 19/04/2024

Inelastic neutron scattering studies on the eight-spin zigzag-chain compound <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>KCu</mml:mi><mml:mn>4</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">P</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mn>12</mml:mn></mml:msub></mml:mrow></mml:math>: Confirmation of the validity of a data-driven technique based on machine learning

Description/Abstract:: We performed inelastic neutron scattering (INS) experiments on KCu4P3O12 powder and compared the experimental results with those calculat...
Keyword:: Inelastic neutron scattering, data-driven technique based on machine learning, and eight-spin zigzag-chain compound KCu4P3O12
Resource Type:: Article
Author:: Masashi Hase, Ryo Tamura, Koji Hukushima, Shinichiro Asai, Takatsugu Masuda, Shinichi Itoh, and Andreas Dönni
Journal:: Physical Review B
Date Uploaded:: 18/04/2024

Anisotropic optical conductivity accompanied by a small energy gap in the one-dimensional thermoelectric telluride <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi mathvariant="normal">Ta</mml:mi><mml:mn>4</mml:mn></mml:msub><mml:msub><mml:mi>SiTe</mml:mi><mml:mn>4</mml:mn></mml:msub></mml:mrow></mml:math>

Description/Abstract:: We investigated the optical properties of single crystals of one-dimensional van der Waals crystal Ta4SiTe4, which exhibited high thermoe...
Keyword:: Optical Conductivity, one-dimensional, and van der Waals
Resource Type:: Article
Author:: Fumiya Matsunaga, Yoshihiko Okamoto, Yasunori Yokoyama, Kanji Takehana, Yasutaka Imanaka, Yuto Nakamura, Hideo Kishida, Shoya Kawano, Kazuyuki Matsuhira, and Koshi Takenaka
Journal:: Physical Review B
Date Uploaded:: 11/04/2024

Crucial role of interfacial <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>s</mml:mi><mml:mtext>−</mml:mtext><mml:mi>d</mml:mi></mml:mrow></mml:math> exchange interaction in the temperature dependence of tunnel magnetoresistance

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

Bias voltage effects on tunneling magnetoresistance in Fe/MgAl2O4/Fe(001) junctions: Comparative study with Fe/MgO/Fe(001) junctions

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

First-principles study of the anisotropic magneto-Peltier effect

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

Giant interfacial perpendicular magnetic anisotropy in Fe/CuIn1−xGaxSe2 beyond Fe/MgO

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

Interface-driven giant tunnel magnetoresistance in (111)-oriented junctions

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

Stroboscopic time-of-flight neutron diffraction in long pulsed magnetic fields

Crucial role of interfacial <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>s</mml:mi><mml:mtext>−</mml:mtext><mml:mi>d</mml:mi></mml:mrow></mml:math> exchange interaction in the temperature dependence of tunnel magnetoresistance

Bias voltage effects on tunneling magnetoresistance in Fe/MgAl2O4/Fe(001) junctions: Comparative study with Fe/MgO/Fe(001) junctions

First-principles study of the anisotropic magneto-Peltier effect

Giant interfacial perpendicular magnetic anisotropy in Fe/CuIn1−xGaxSe2 beyond Fe/MgO

Interface-driven giant tunnel magnetoresistance in (111)-oriented junctions

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