大西弘明 (Hiroaki Onishi)
〒319-1195 茨城県那珂郡東海村大字白方２番地４ 日本原子力研究開発機構 先端基礎研究センター
Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, JAPAN
Paper
| [43] |
JPSJ Papers of Editors' ChoiceMagnetic Excitation in the S=1/2 Ising-like Antiferromagnetic Chain CsCoCl3 in Longitudinal Magnetic Fields Studied by High-field ESR Measurements Shojiro Kimura, Hiroaki Onishi, Kouichi Okunishi, Mitsuru Akaki, Yasuo Narumi, Masayuki Hagiwara, Koichi Kindo, and Hikomitsu Kikuchi J. Phys. Soc. Jpn. 92, 094701 (2023). |
| [42] |
Low Temperature Behavior of Itinerant Ferromagnet Realized in Extended Nagaoka Mechanism Hiroaki Onishi and Seiji Miyashita JPS Conf. Proc. 38, 011157 (2023). Proceedings of LT29 (8/18-24, 2022, Sapporo, Japan (Hybrid)) |
| [41] |
Finite-temperature properties of extended Nagaoka ferromagnetism: Ordering processes and precursor of a quantum phase transition between itinerant ferromagnetic and Mott antiferromagnetic states Hiroaki Onishi and Seiji Miyashita Phys. Rev. B 106, 134436 (2022). preprint: arXiv:2207.06588 |
| [40] |
Excitation and transport of bound magnon clusters in frustrated ferromagnetic chain Hiroaki Onishi J. Phys.: Conf. Ser. 2207, 012045 (2022). preprint: arXiv:2203.16321 Proceednings of CCP2021 (8/1-5, 2021, Coventry, UK, online) |
| [39] |
Optical selection rules of the magnetic excitation in the S=1/2 one-dimensional Ising-like antiferromagnet BaCo2V2O8 Shojiro Kimura, Hiroaki Onishi, Akira Okutani, Mitsuru Akaki, Yasuo Narumi, Masayuki Hagiwara, Kouichi Okunishi, Koichi Kindo, Zhangzhen He, Tomoyasu Taniyama, and Mitsuru Itoh Phys. Rev. B 105, 014417 (2022). |
| [38] |
Spin Excitations of the S=1/2 One-dimensional Ising-like Antiferromagnet BaCo2V2O8 in Transverse Magnetic Fields Akira Okutani, Hiroaki Onishi, Shojiro Kimura, Tetsuya Takeuchi, Takanori Kida, Michiyasu Mori, Atsushi Miyake, Masashi Tokunaga, Koichi Kindo, and Masayuki Hagiwara J. Phys. Soc. Jpn. 90, 044704 (2021). |
| [37] |
Magnetic excitations and transport properties in frustrated ferromagnetic chain Hiroaki Onishi J. Magn. Magn. Mater. 479, 88-90 (2019). preprint: arXiv:1902.02932 Proceedings of JEMS2018 (9/3-7, 2018, Mainz, Germany) |
| [36] |
Dynamical quadrupole structure factor of ferromagnetic frustrated chain Hiroaki Onishi Physica B 536, 346-349 (2018). preprint: arXiv:1806.01434 Proceedings of SCES2017 (9/17-21, 2017, Prague, Czech Republic) |
| [35] |
Neutron scattering study of yttrium iron garnet Shin-ichi Shamoto, Takashi U. Ito, Hiroaki Onishi, Hiroki Yamauchi, Yasuhiro Inamura, Masato Matsuura, Mitsuhiro Akatsu, Katsuaki Kodama, Akiko Nakao, Taketo Moyoshi, Koji Munakata, Takashi Ohhara, Mitsutaka Nakamura, Seiko Ohira-Kawamura, Yuichi Nemoto, and Kaoru Shibata Phys. Rev. B 97, 054429 (2018). preprint: arXiv:1705.02167 |
| [34] |
Quantum phase transitions driven by rhombic-type single-ion anisotropy in the S=1 Haldane chain Yu-Chin Tzeng, Hiroaki Onishi, Tsuyoshi Okubo, and Ying-Jer Kao Phys. Rev. B 96, 060404(R) (2017). preprint: arXiv:1705.01558 |
| [33] |
Magnetic structure and dispersion relation of the S=1/2 quasi-one-dimensional Ising-like antiferromagnet BaCo_{2}V_{2}O_{8} in a transverse magnetic field M. Matsuda, H. Onishi, A. Okutani, J. Ma, H. Agrawal, T. Hong, D. M. Pajerowski, J. R. D. Copley, K. Okunishi, M. Mori, S. Kimura, and M. Hagiwara Phys. Rev. B 96, 024439 (2017). |
| [32] |
Variational Wavefunction for the Periodic Anderson Model with Onsite Correlation Factors Katsunori Kubo and Hiroaki Onishi J. Phys. Soc. Jpn. 86, 013701 (2017) preprint: arXiv:1611.05174 |
| [31] |
JPSJ Papers of Editors' Choice Magnetic Excitations of Spin Nematic State in Frustrated Ferromagnetic Chain Hiroaki Onishi J. Phys. Soc. Jpn. 84, 083702 (2015) preprint: arXiv:1506.06891 |
| [30] |
Effects of magnetic anisotropy on spin dynamics of ferromagnetic frustrated chain Hiroaki Onishi J. Phys.: Conf. Ser. 592, 012109 (2015) preprint: arXiv:1506.06883 Proceedings of SCES2014 (7/7-11, 2014, Grenoble, France) |
| [29] |
Doping control of realization of an extended Nagaoka ferromagnetic state from the Mott state Hiroaki Onishi and Seiji Miyashita Phys. Rev. B 90, 224426 (2014) preprint: arXiv:1501.02899 |
| [28] |
Ground state of S=1 zigzag spin-orbital chain Hiroaki Onishi JPS Conf. Proc. 3, 014025 (2014) preprint: arXiv:1310.8018 Proceedings of SCES2013 (8/5-9, 2013, Tokyo, Japan) |
| [27] |
Nonequilibrium dynamics of multiorbital correlated electron system under time-dependent electric fields Hiroaki Onishi Phys. Status Solidi B 250, 553 (2013) preprint: arXiv:1310.8017 Proceedings of QCNP2012 (8/26-29, 2012, Dresden, Germany) |
| [26] |
Spin-orbital state induced by strong spin-orbit coupling Hiroaki Onishi J. Phys.: Conf. Ser. 391, 012102 (2012) preprint: arXiv:1310.8016 Proceedings of SCES2011 (8/29-9/3, 2011, Cambridge, UK) |
| [25] |
Multipole correlations of t_{2g}-orbital Hubbard model with spin-orbit coupling Hiroaki Onishi J. Phys. Soc. Jpn. 80 Suppl. A, SA141 (2011) preprint: arXiv:1101.2055 Proceedings of ICHE2010 (9/17-20, 2010, Hachioji, Japan) |
| [24] |
Dynamics of attractively interacting fermi atoms in one-dimensional optical lattices: Non-equilibrium simulations of fermion superfluidity Masahiko Okumura, Hiroaki Onishi, Susumu Yamada, and Masahiko Machida Physica C 470, S949-S952 (2010) Proceedings of M2S-IX (9/7-12, 2009, Tokyo, Japan) |
| [23] |
Anomalous non-equilibrium electron transport in one-dimensional quantum nano wire at half-filling: time dependent density renormalization group study Masahiko Okumura, Hiroaki Onishi, Susumu Yamada, and Masahiko Machida J. Phys.: Conf. Ser. 248, 012031 (2010) Proceedings of Dubna-Nano2010 (7/5-10, 2010, Dubna, Russia) |
| [22] |
Charge-spin-orbital dynamics of one-dimensional two-orbital Hubbard model Hiroaki Onishi J. Phys.: Conf. Ser. 200, 012152 (2010) preprint: arXiv:1101.2054 Proceedings of ICM2009 (7/26-31, 2009, Karlsruhe, Germany) |
| [21] |
Antiferro-quadrupole state of orbital-degenerate Kondo lattice model with f^{2} configuration Hiroaki Onishi and Takashi Hotta J. Phys. Soc. Jpn. 77 Suppl. A, 199-201 (2008) preprint: arXiv:0710.1579 Proceedings of Skutterudite2007 (9/26-30, 2007, Kobe, Japan) |
| [20] |
Deformation of SU(4) singlet spin-orbital state due to Hund's rule coupling Hiroaki Onishi Phys. Rev. B 76, 014441 (2007) preprint: cond-mat/0701092 |
| [19] |
Effect of Hund's rule coupling on SU(4) spin-orbital system Hiroaki Onishi and Takashi Hotta J. Magn. Magn. Mater. 310, 790-792 (2007) preprint: cond-mat/0607104 Proceedings of ICM2006 (8/20-25, 2006, Kyoto, Japan) |
| [18] |
Spin-orbital gap in multiorbital antiferromagnet with geometrical frustration Hiroaki Onishi and Takashi Hotta Phys. Rev. B 75, 014410 (2007) preprint: cond-mat/0604076 v2 |
| [17] |
Stripe Charge Ordering in Triangular-Lattice Systems Hiroaki Onishi and Takashi Hotta AIP Conference Proceedings 850, 1075-1076 (2006) preprint: cond-mat/0508414 Proceedings of LT24 (8/10-17, 2005, Orlando, U.S.A.) |
| [16] |
Multipole correlations in low-dimensional f-electron systems Hiroaki Onishi and Takashi Hotta J. Phys. Soc. Jpn. 75 Suppl., 266-269 (2006) preprint: cond-mat/0511276 Proceedings of ASR-WYP-2005 (9/27-29, 2005, Tokai, Japan) |
| [15] |
Spin-chagre-orbital ordering in triangle-based lattices Hiroaki Onishi and Takashi Hotta Physica B 378-380, 589-591 (2006) preprint: cond-mat/0506242 Proceedings of SCES'05 (7/26-30, 2005, Vienna, Austria) |
| [14] |
Spin, charge, and orbital correlations in the one-dimensional t_{2g}-orbital Hubbard model Jose C. Xavier, Hiroaki Onishi, Takashi Hotta, and Elbio Dagotto Phys. Rev. B 73, 014405 (2006) preprint: cond-mat/0507472 |
| [13] |
Suppression of spin frustration due to orbital selection Hiroaki Onishi and Takashi Hotta Phys. Rev. B 71, 180410(R) (2005) preprint: cond-mat/0410023 |
| [12] |
Key role of orbital anisotropy in geometrically frustrated electron system Hiroaki Onishi and Takashi Hotta Physica B 359-361, 669-671 (2005) preprint: cond-mat/0408197 Proceedings of SCES'04 (7/26-30, 2004, Karlsruhe, Germany) |
| [11] |
An orbital-based scenario for the magnetic structure of neptunium compounds Hiroaki Onishi and Takashi Hotta New J. Phys. 6, 193 (2004) preprint: cond-mat/0411100 |
| [10] |
Orbital-controlled magnetic transition between gapful and gapless phases in the Haldane system with t_{2g}-orbital degeneracy Hiroaki Onishi and Takashi Hotta Phys. Rev. B 70, 100402(R) (2004) preprint: cond-mat/0408479 |
| [9] |
Effects of quantum lattice vibration on the spin-Peierls transition Hiroaki Onishi and Seiji Miyashita Physica B 329-333, 874-875 (2003) Proceedings of LT23 (8/20-27, 2002, Hiroshima, Japan) |
| [8] |
Quantum Narrowing Effect in a Spin-Peierls System with Quantum Lattice Fluctuation Hiroaki Onishi and Seiji Miyashita J. Phys. Soc. Jpn. 72, 392-398 (2003) preprint: cond-mat/0207025 v2 |
| [7] |
First-order spin-Peierls transition in S=1 antiferromagnetic Heisenberg chains Hiroaki Onishi and Seiji Miyashita J. Phys. Chem. Solids. 63, 1451-1454 (2002) Proceedings of ISSP8 (10/2-5, 2001, Kashiwa, Japan) |
| [6] |
Spin-Peierls Transition in S=1 Antiferromagnetic Heisenberg Chains Hiroaki Onishi and Seiji Miyashita Prog. Theor. Phys. Suppl. 145, 182-187 (2002) Proceedings of YITP Workshop (11/15-16, 2001, Kyoto, Japan) |
| [5] |
Spin-Peierls transition of the first order in S=1 antiferromagnetic Heisenberg chains Hiroaki Onishi and Seiji Miyashita Phys. Rev. B 64, 014405 (2001) preprint: cond-mat/0012377 v2 |
| [4] |
Local magnetic structures induced by inhomogeneities of the lattice in S=1/2 bond-alternating chains and their response to a time-dependent magnetic field with noise Masamichi Nishino, Hiroaki Onishi, Kizashi Yamaguchi, and Seiji Miyashita Phys. Rev. B 62, 9463-9471 (2000) preprint: cond-mat/0002082 v2 |
| [3] |
Temperature Dependence of Spin and Bond Ordering in a Spin-Peierls System Hiroaki Onishi and Seiji Miyashita J. Phys. Soc. Jpn. 69, 2634-2641 (2000) preprint: cond-mat/9912210 v2 |
| [2] |
Local magnetic structure due to inhomogeneity of interaction in S=1/2 antiferromagnetic chains Masamichi Nishino, Hiroaki Onishi, Pascal Roos, Kizashi Yamaguchi, and Seiji Miyashita Phys. Rev. B 61, 4033-4040 (2000) preprint: cond-mat/9906426 |
| [1] |
Quantum Monte Carlo Study on Magnetization Processes Hiroaki Onishi, Masamichi Nishino, Naoki Kawashima, and Seiji Miyashita J. Phys. Soc. Jpn. 68, 2547-2552 (1999) preprint: cond-mat/9903375 v2 |
Article
| [2] |
原子力機構、「スピン液晶」の特性解明--磁性材料開発に一役 (in Japanese) 日刊工業新聞 (2016年1月15日付) |
| [1] |
スピン液晶が異方的なスピンダイナミクス提示 (in Japanese) 科学新聞 (2015年9月4日付) |