Publications

1. Yutaka Akagi and Yukitoshi Motome,

“Spin Chirality Ordering and Anomalous Hall Effect in the Ferromagnetic Kondo Lattice Model on a Triangular Lattice”,

Journal of the Physical Society of Japan 79, 083711 (2010).

[ranked in the Top 20 Most Downloaded Articles (of JPSJ), August 2010]

Preprint arXiv:1006.4235

selected as 'The 25th Outstanding Paper Award of the Physical Society of Japan'

[日本物理学会第25回論文賞]

[第17回日本物理学会若手奨励賞受賞対象論文(領域3)]

2. Yutaka Akagi and Yukitoshi Motome,

“Noncoplanar spin canting in lightly-doped ferromagnetic Kondo lattice model on a triangular lattice”,

Journal of Physics: Conference Series. 320, 012059 (2011).

Open Access

Preprint arXiv:1102.4940

3. Yutaka Akagi, Masafumi Udagawa, and Yukitoshi Motome,

“Hidden Multiple-spin Interactions as an Origin of Spin Scalar Chiral Order in Frustrated Kondo Lattice Models”,

Physical Review Letters 108, 096401 (2012).

Preprint arXiv:1201.3053

[第17回日本物理学会若手奨励賞受賞対象論文(領域3)]

4. Yutaka Akagi, and Yukitoshi Motome,

“Ground-state phase diagram of the Kondo lattice model on triangular-to-kagome lattices”,

Journal of the Korean Physical Society 63, 405 (2013).

Preprint arXiv:1206.0374

5. Yutaka Akagi, Masafumi Udagawa, and Yukitoshi Motome,

“Effect of Quantum Spin Fluctuation on Scalar Chiral Ordering in the Kondo Lattice Model on a Triangular Lattice”,

Journal of the Physical Society of Japan 82, 123709 (2013).

[ranked in the Top 20 Most Downloaded Articles (of JPSJ), December 2013]

Preprint arXiv:1310.6292

6. Yutaka Akagi, Masafumi Udagawa, and Yukitoshi Motome,

“Linear Spin Wave Analysis for General Magnetic Orders in the Double-Exchange Model”,

JPS Conference proceedings 3, 014017 (2014).

Preprint arXiv:1310.0176

7. Ryo Ozawa, Masafumi Udagawa, Yutaka Akagi, and Yukitoshi Motome,

“Reconstruction of Chiral Edge States in a Magnetic Chern Insulator”,

Journal of the Physical Society of Japan 83, 073706 (2014).

Preprint arXiv:1404.2450

8. Ryo Ozawa, Masafumi Udagawa, Yutaka Akagi, and Yukitoshi Motome,

“Surface and interface effects on a magnetic Chern insulator”,

Journal of Physics: Conference Series 592, 012130 (2015).

Open Access

Preprint arXiv:1409.7939

9. Yutaka Akagi and Yukitoshi Motome,

“Spontaneous formation of kagome network and Dirac half-semimetal on a triangular lattice”,

Physical Review B 91, 155132 (2015).

Preprint arXiv:1412.3643

10. Hiroaki T. Ueda, Yutaka Akagi, and Nic Shannon,

“Quantum solitons with emergent interactions in a model of cold atoms on the triangular lattice”,

Physical Review A 93, 021606(R) (2016).

[selected in 'Kaleidoscope']

Preprint arXiv:1511.06515

[第17回日本物理学会若手奨励賞受賞対象論文(領域3)]

11. Yutaka Akagi, Hosho Katsura, and Tohru Koma,

“A New Numerical Method for Z2 Topological Insulators with Strong Disorder”,

Journal of the Physical Society of Japan 86, 123710 (2017).

[selected as 'Papers of Editors' Choice']

Open Access

[ranked in the Top 20 Most Downloaded Articles (of JPSJ), December 2017]

Preprint arXiv:1709.05853

日本物理学会誌2018年第73巻第3号JPSJの最近の注目論文「乱れたトポロジカル絶縁体:

Z2 指数の新しい数値計算法」掲載 [link] [pdf]

12. Nobuyuki Yoshioka, Yutaka Akagi, and Hosho Katsura,

“Learning disordered topological phases by statistical recovery of symmetry”,

Physical Review B 97, 205110 (2018).

[selected as 'Editors' Suggestion']

Preprint arXiv:1709.05790

[吉岡氏第14回日本物理学会若手奨励賞受賞対象論文(領域11)]

13. Hiroki Kondo, Yutaka Akagi, and Hosho Katsura,

“Z2 topological invariant for magnon spin Hall systems”,

Physical Review B 99, 041110(R) (2019).

Open Access

Preprint arXiv:1808.09149

14. Nobuyuki Yoshioka, Yutaka Akagi, and Hosho Katsura,

“Transforming generalized Ising models into Boltzmann machines”,

Physical Review E 99, 032113 (2019).

Preprint arXiv:1812.05269

[吉岡氏第14回日本物理学会若手奨励賞受賞対象論文(領域11)]

15. Hiroki Kondo, Yutaka Akagi, and Hosho Katsura,

“Three-dimensional topological magnon systems”,

Physical Review B 100, 144401 (2019).

[selected as 'Editors' Suggestion']

Preprint arXiv:1905.06748

16. Hiroki Kondo, Yutaka Akagi, and Hosho Katsura,

“Non-Hermiticity and topological invariants of magnon Bogoliubov-de Gennes systems”,

Progress of Theoretical and Experimental Physics 2020, 12A104 (2020).

Open Access

Preprint arXiv:2006.10391

17. Yutaka Akagi,

“Topological Invariant for Bosonic Bogoliubov-de Gennes Systems with Disorder”,

Journal of the Physical Society of Japan 89, 123601 (2020).

Open Access

[ranked in the Top 20 Most Downloaded Articles (of JPSJ), December 2020]

Preprint arXiv:2010.07762

18. Yutaka Akagi, Yuki Amari, Nobuyuki Sawado, and Yakov Shnir,

“Isolated Skyrmions in the CP2 nonlinear sigma model with a Dzyaloshinskii-Moriya type interaction”,

Physical Review D 103, 065008 (2021).

Open Access

Preprint arXiv:2101.10566

[collaboration with high-energy physicists]

19. Hiroki Kondo and Yutaka Akagi,

“Dirac surface states in magnetic analogs of topological crystalline insulators”,

Physical Review Letters 127, 177201 (2021).

Open Access

Preprint arXiv:2012.02034

Press release: 電子が動くことのできない磁性絶縁体におけるマグノンの表面状態と新規輸送現象を理論的に解明

20. Yutaka Akagi, Yuki Amari, Sven Bjarke Gudnason, Muneto Nitta, and Yakov Shnir,

“Fractional Skyrmion molecules in a CPN-1 model”,

Journal of High Energy Physics 2021, 194 (2021).

Open Access

Preprint arXiv:2107.13777

[collaboration with high-energy physicists]

21. Hiroki Kondo and Yutaka Akagi,

“Nonlinear magnon spin Nernst effect in antiferromagnets and strain-tunable pure spin current”,

Physical Review Research 4, 013186 (2022).

Open Access

Preprint arXiv:2109.09464

22. Shoichi Tsubota, Hong Yang, Yutaka Akagi, and Hosho Katsura,

“Symmetry-protected quantization of complex Berry phases in non-Hermitian many-body systems”,

Physical Review B 105, L201113 (2022).

Preprint arXiv:2108.12860

23. Kimberly Remund, Rico Pohle, Yutaka Akagi, Judit Romhányi, Nic Shannon,

“Semi-classical simulation of spin-1 magnets”,

Physical Review Research 4, 033106 (2022).

Open Access

Preprint arXiv:2203.09819

24. Yuki Amari, Yutaka Akagi, Sven Bjarke Gudnason, Muneto Nitta, and Yakov Shnir,

“CP2 Skyrmion Crystals in an SU(3) Magnet with a Generalized Dzyaloshinskii-Moriya Interaction”,

Physical Review B 106, L100406 (2022).

Preprint arXiv:2204.01476

[collaboration with high-energy physicists]

25. Atsushi Ono and Yutaka Akagi,

“Photocontrol of spin scalar chirality in centrosymmetric itinerant magnets”,

Physical Review B 108, L100407 (2023).

Preprint arXiv:2112.08815

26. Leilee Chojnacki, Rico Pohle, Han Yan, Yutaka Akagi, and Nic Shannon,

“Gravitational wave analogues in spin nematics and cold atoms”,

Physical Review B 109, L220407 (2024).

Preprint arXiv:2310.10078

[selected as 'Editors' Suggestion']

27. Masahiko G. Yamada, Takumi Sanno, Masahiro O. Takahashi, Yutaka Akagi, Hidemaro Suwa, Satoshi Fujimoto, Masafumi Udagawa,

“Matrix Product Renormalization Group: Potential Universal Quantum Many-Body Solver”,

Preprint arXiv:2212.13267

28. Nanse Esaki, Yutaka Akagi, and Hosho Katsura,

“Electric field induced thermal Hall effect of triplons in the quantum dimer magnets XCuCl3 (X=Tl, K)”,

Preprint arXiv:2309.12812

29. Atsushi Ono, Shun Okumura, Shohei Imai, and Yutaka Akagi,

“High harmonic generation from electrons moving on topological spin textures”,

Preprint arXiv:2405.01351

[解説記事]

30. 赤城裕、

「量子液晶の物性科学」News Letter Vol.10 (2024年2月) 公募研究紹介

「スピン1量子磁性体におけるスピン液晶(一般化磁気)スキルミオンの開拓」[pdf]

31. 赤城裕、

「量子液晶の物性科学」News Letter Vol.7 (2022年7月) 公募研究紹介

「磁性体・冷却原子系におけるスピン液晶スキルミオンの開拓」[pdf]

32. 赤城裕、

「量子液晶の物性科学」News Letter Vol.4 (2021年1月) 公募研究紹介

「量子液晶におけるトポロジカル励起と創発現象」[pdf]

33. 赤城裕、

「トポロジーが紡ぐ物質科学のフロンティア」NEWSLETTER No.5 (2020年2月) 公募研究紹介

「マグノン系トポロジカル相とその不変量」[pdf]

34. 赤城裕、

「トポロジーが紡ぐ物質科学のフロンティア」NEWSLETTER No.4 (2019年2月) コラム記事

「機械学習によるトポロジカル相転移の検出」[pdf]

35. 吉岡信行、赤城裕、桂法称、

固体物理 Vol.54, No.9, 51(475) (2019)

「ニューラルネットワークによる物理状態の判定から表現まで」[link] [pdf]

36. 日本物理学会誌2018年第73巻第3号JPSJの最近の注目論文「乱れたトポロジカル絶縁体:

Z2 指数の新しい数値計算法」[pdf]