新居陽一(Nii Yoichi)

連絡先

email: yoichi.nii.c1_at_tohoku.ac.jp (_at_を@に置き換えてください)
電話: 022-215-2044

　　　　　　　　　　　　　　　　　　　　

略歴

2003年3月県立鳴門高等学校卒業
2007年3月筑波大学第三学群工学基礎学類卒業
2009年3月筑波大学大学院数理物質科学研究科物性分子工学専攻修士課程修了 (指導教官:宮崎修一 教授)
2012年3月東北大学大学院理学研究科物理学専攻博士課程修了 (指導教官:有馬孝尚 教授)
2012年4月東京大学大学院新領域創成科学研究科 学振PD 特別研究員 (有馬研究室)
2013年4月理化学研究所創発物性科学研究センター創発デバイス研究チーム 特別研究員(岩佐チーム)
2015年7月東京大学大学院総合文化研究科広域科学専攻相関基礎科学系 助教
2018年7月東北大学金属材料研究所 助教
2019年10月JSTさきがけ研究員（兼務）「トポロジカル材料科学と革新的機能創出」領域
2023年6月東北大学プローミネントリサーチャー
2022年7月東北大学金属材料研究所 准教授
2023年4月創発研究者 （川村パネル）

研究内容

トポロジカル磁気構造、音響測定、高周波計測、マイクロ波顕微鏡、軌道物理、ナノデバイス etc...

原著論文

[37] Y. Nii, K. Yamamoto, M. Kanno, S. Maekawa, and Y. Onose
"Observation of nonreciprocal diffraction of surface acoustic wave"
submitted
[36] A. H. Mayo, D. Deaconu, H. Masuda, Y. Nii, H. Takahashi, R. V. Belosludov, S. Ishiwata, M. S. Bahramy, and Y. Onose
"Band-asymmetry-driven nonreciprocal electronic transport in a helimagnetic semimetal α-EuP3"
arXiv:2404.13856
[35] Y. Kimoto, H. Masuda, T. Seki, Y. Nii, and Y. Onose
"Current-induced sliding motion in a helimagnet MnAu2"
arXiv:2403.00167
[34] H. Masuda, T. Seki, J. Ohe, Y. Nii, H. Masuda, K. Takanashi, and Y. Onose
"Room temperature chirality switching and detection in a helimagnetic MnAu2 thin film"
Nat. Commun. 15, 1999 (2024)
[33] Y. Nii, Y. Onose
"Imaging an Acoustic Topological Edge Mode on a Patterned Substrate with Microwave Impedance Microscopy"
Phys. Rev. Applied 19, 014001 (2023)
arXiv:2206.02318
プレスリリース："数学の原理で高周波の新型音響導波路を開発".
[32] S. Hirose, Y. Iguchi, Y. Nii, T. Kimura, and Y. Onose
"Nonreciprocal microwave response at room temperature in multiferroic Y-type hexaferrite BaSrCo2Fe11AlO22"
Appl. Phys. Lett. 121, 222401 (2022)
[31] Y. Nii, Y. Hirokane,S. Nakamura, S. Kimura, Y. Tomioka, T. Nojima, and Y. Onose
"Elastic study of electric quadrupolar correlation in the paramagnetic state of a frustrated quantum magnet Tb2+δTi2−δO7"
Phys. Rev. B 105, 094414 (2022).
[30] T. Manjo, S. Kitou, N. Katayama, S. Nakamura, T. Katsufuji, Y. Nii, T. Arima, J. Nasu, T. Hasegawa, K. Sugimoto, D. Ishikawa, A. Q. R. Baron, and H. Sawa
"Do electron distributions with orbital degree of freedom exhibit anisotropy?"
Mater. Adv. 3, 3192 (2022).
[29] Y. Nii, Y. Hirokane, T. Koretsune, D. Ishikawa, A. Q. R. Baron, and Y. Onose
"Effect of symmetry breaking on short wavelength acoustic phonons in the chiral magnet MnSi"
Phys. Rev. B 104, L081101 (2021).
[28] M. Akaike, Y. Nii, H. Masuda, and Y. Onose
"Nonreciprocal electronic transport in PdCrO2: Implication of spatial inversion symmetry breaking"
Phys. Rev. B 103, 184428 (2021).
[27] R. Sasaki, Y. Nii, Y. Onose
"Magnetization control by angular momentum transfer from surface acoustic wave to ferromagnetic spin moments"
Nature Communications 12, 2599 (2021).
[26] N. Jiang, Y. Nii, H. Arisawa, E. Saitoh J. Ohe, Y. Onose
"Chirality memory Stored in Magnetic Domain Walls in the Ferromagnetic State of MnP"
Phys. Rev. Lett. 126, 177205 (2021). Editors' suggestion
[25] Y. Hirokane, Y. Nii, H. Masuda, Y. Onose
"Nonreciprocal thermal transport in a multiferroic helimagnet"
Sci. Adv. 6, eabd3703 (2020).
[24] N. Jiang, Y. Nii, H. Arisawa, E. Saitoh, and Y. Onose
"Electrical current control of spin helicity in an itinerant helimagnet"
Nat. Commun. 11, 1601 (2020).
[23] Y. Hirokane, Y. Nii, Y. Tomioka, and Y. Onose
"Phononic thermal Hall effect in diluted terbium oxides"
Phys. Rev. B 99, 0134419 (2019).
[22] R. Sasaki, Y. Nii, and Y. Onose
"Surface acoustic wave coupled to magnetic resonance on a multiferroic CuB2O4"
Phys. Rev. B 99, 014418 (2019).
[21] Y. Iguchi, Y. Nii, M. Kawano, H. Murakawa, N. Hanasaki, Y. Onose
"Microwave non-reciprocity of magnon excitations in a non-centrosymmetric antiferromagnet Ba2MnGe2O7"
Phys. Rev. B 98, 064416 (2018).
[20] Y. Ishii, R. Sasaki, Y. Nii, T. Ito, and Y. Onose
"Magnetically Controlled Surface AcousticWaves on Multiferroic BiFeO3"
Phys. Rev. Applied 9, 034034 (2018).
[19] N. Jiang, Y. Nii, R. Ishii, Z. Hiroi, and Y. Onose
"Magnetotransport properties in the noncentrosymmetric itinerant ferromagnet Cr11Ge19"
Phys. Rev. B 96, 144435 (2017).
[18] K. Matsuura, H. Sagayama, A. Uehara, Y. Nii, R. Kajimoto, K. Kamazawa, K. Ikeuchi, S. Ji, N. Abe, and T. Arima
"Spin-Orbital Correlated Dynamics in the Spinel-Type Vanadium Oxide MnV2O4"
Phys. Rev. Lett. 119, 017201 (2017).
[17] Y. Iguchi, Y. Nii, and Y. Onose
"Magnetoelectrical control of nonreciprocal microwave response in a multiferroic helimagnet"
Nature Communications 8, 15252 (2017). (arxiv:1607.06889.)
プレスリリース："マルチフェロイクスにおけるマイクロ波非相反性の電気的制御".
[16] Y. Nii, R. Sasaki, Y. Iguchi, and Y. Onose
"Microwave Magneto-chiral Effect in the Non-centrosymmetric Magnet CuB2O4"
J. Phys. Soc. Jpn. 86, 024707 (2017). (arxiv:1605.07414.)
JPSJ Editor's choiceに選ばれました。
JPSJ News Comments: Magnet as a Switchable One-way Street.
[15] R. Sasaki, Y. Nii, Y. Iguchi, and Y. Onose
"Nonreciprocal propagation of surface acoustic wave in Ni/LiNbO3"
Phys. Rev. B 95, 020407(R) (2017). (arXiv:1605.04058.)
[14] 新居陽一, 中島多朗, 有馬孝尚, 岩佐義宏
"圧力印加によるスキルミオン相の生成・消滅"
応用物理 第85巻 第10号 885 (2016).
[13] N. Kanazawa, Y. Nii, X. –X. Zhang, A. Mishchenko, G. De Filippis, F. Kagawa, Y. Iwasa, N. Nagaosa, and Y. Tokura
"Critical phenomena of emergent magnetic monopoles in a chiral magent"
Nature Communications 7, 11622 (2016).
プレスリリース："固体中の磁気モノポールが生み出す電磁気効果を観測".
[12] Y. Murakami, T. Suzuki, Y. Nii, S. Murai, T. Arima, R. Kainuma and D. Shindo
"Application of strain to orbital-spin-coupled system MnV2O4 at cryogenic temperatures within a transmission electron microscope"
Microscopy 1-10, (2016).
[11] Y. Nii, T. Nakajima, A. Kikkawa, Y. Yamasaki, K. Ohishi, J. Suzuki, Y. Taguchi, T. Arima, Y. Tokura and Y. Iwasa
"Uniaxial stress control of skyrmion phase"
Nature Communications 6, 8539 (2015).
プレスリリース：(英語）"Just a touch of skyrmions". (日本語) "磁気渦を押すだけで生成・消去できる新手法を発見".
科学新聞(11月6日付 6面)に記事が掲載されました。
フジサンケイビジネスアイ(11月19日付)に記事が掲載されました。
[10] K. Matsuura, H. Sagayama, Y. Nii, N. D. Khanh, N. Abe, and T. Arima
"X-ray magnetic circular dichroism study of an orbital ordered state in the spinel-type vanadium oxide AV2O4 (A = Mn, Fe)"
Phys. Rev. B 92, 035133 (2015).
[9] Y. Nii, A. Kikkawa, Y. Taguchi, Y. Tokura and Y. Iwasa
"Elastic Stiffness of a Skyrmion Crystal"
Phys. Rev. Lett. 113, 267203 (2014).
RIKEN Research Highlights "Skyrmions get a sonic touch".
[8] Y. Nii, H. Sagayama, K. Umetsu, N. Abe, K. Taniguchi, T. Arima
"Interplay among spin, orbital, and lattice degrees of freedom in a frustrated spinel Mn3O4"
Phys. Rev. B 87, 195115 (2013).
[7] Y. Nii, N. Abe, T. Arima
"Orbital-spin-coupled fluctuations in spinel vanadate MnV2O4"
Phys. Rev. B 87, 085111 (2013).
[6] Y. Murakami, Y. Nii, T. Arima, D. Shindo, K. Yangisawa, A. Tonomura,
"TEM studies of domain formation mechanisms in MnV2O4"
J. Alloys Compd. 577, S731-S735 (2013).
[5] Y. Nii, H. Sagayama, T. Arima, S. Aoyagi, R. Sakai, S. Maki, E. Nishibori, H. Sawa, K. Sugimoto, H. Ohsumi, M. Takata
"Orbital structures in spinel vanadates AV2O4 (A = Fe, Mn)"
Phys. Rev. B 86, 125142 (2012).
[4] Y. Nii, N. Abe, K. Taniguchi, and T. Arima,
"Magnetic shape memory effect in orbital-spin-coupled system MnV2O4"
Appl. Phys. Lett. 100, 051905 (2012).
[3] Y. Murakami,Y. Nii, T. Arima, D. Shindo, K. Yanagisawa, and A. Tonomura,
"Magnetic domain structure in the orbital-spin-coupled system MnV2O4"
Phys. Rev. B 84, 054421 (2011).
[2] Y. Nii, T. Arima, H. Y. Kim, and S. Miyazaki,
"Effect of randomness on ferroelastic transitions: Disorder-induced hysteresis loop rounding in Ti-Nb-O martensitic alloy"
Phys. Rev. B 82, 214104 (2010).
[1] Y. Nii, H. Y. Kim, S. Miyazaki
"Effect of Nb Content on Plastic Deformation Behavior and Deformation Textures of Ti-Nb-Zr-Ta-O Alloy"
J. Japan Inst. Met. Mater., 72, 970-974 (2008).