発表論文/Publications
発表論文/Publications
Preprints:
9. R. Misawa, S. Kitou, R. Yamada, T. Gaggl, R. Nakano, Y. Shibata, Y. Okamura, M. Kriener, Y. Nakamura, Y. Onuki, Y. Takahashi, T. Arima, M. Jovanovic, L. M. Schoop, and M. Hirschberger
"Successive orthorhombic distortions in kagome metals by molecular orbital formation"
Submitted. (arXiv:2507.17102)
8. Y. Fujishiro, S. Kitou, K. Yoshimi, C. Terakura, N. Ogawa, S. Nakano, T. Misawa, T. Tsumuraya, H. Seo, S. Horiuchi, D. Okuyama, H. Sagayama, R. Kumai, T. Arima, and Y. Tokura
"XXX"
Submitted.
7. K. Gautam, S. Kitou, Y. Nakamura, A. K. Yogi, D. K. Shukla, and T. Arima
"Visualization of Co-3d high- and low-spin states in an Ising spin chain magnet"
Submitted. (arXiv:2506.01298)
6. S. Kitou, A. Nakano, M. Imaizumi, Y. Nakamura, Y. Nakamura, H. Kishida, T. Arima, and I. Terasaki
"Current-induced successive structural phase transitions beyond thermal equilibrium in single-crystal VO2"
Submitted. (arXiv:2505.08186)
5. S. Aoyagi, S. Kitou, Y. Nakamura, M. Hirayama, H. Matsuoka, R. Arita, S. Murakami, T. Arima, and N. Kanazawa
"Unraveling a chemical-bond-driven root of topology in three-dimensional chiral crystals"
Submitted. (arXiv:2507.19900)
4. Y. Sato, S. Nagahama, S. Kitou, H. Sagayama, I. Belopolski, R. Yoshimi, M. Kawamura, A. Tsukazaki, N. Kanazawa, T. Nomoto, R. Arita, T. Arima, M. Kawasaki, and Y. Tokura
"XXX"
Submitted.
3. T. Nomura, S. Kitou, J. Komatsu, K. Koga, T. Hasegawa, N. Ogita, Y. Nakamura, H. Ishikawa, T. Yajima, A. Matsuo, M. Kofu, O. Yamamuro, Z. Hiroi, Y. Tomita, T. Arima, and T. Matsuo
"Ferroaxial order of the monolayer ice in martyite"
Submitted. (arXiv:2503.14018)
2. G. Tomassucci, F. Minati, L. Tortora, M. Hattori, A. Barinov, M. Kopciuszynski, S. Kitou, H. Sawa, T. Mizokawa, and N. L. Saini
"XXX"
Submitted.
1. S. Kitou, K. Ueda, Y. Nakamura, K. Sugimoto, Y. Nomura, R. Arita, Y. Tokura, and T. Arima
"Visualization of spin-orbit entangled 4f electrons in crystalline materials"
Proc. Natl. Acad. Sci. USA, in press. (arXiv:2410.16680)
Published papers:
36. Y. Kobayashi, H. Takahashi, S. Kitou, A. Nakano, H. Sagayama, Y. Yamasaki, and S. Ishiwata
"A Rutile-Based Homologous Series Na(PtO2)2n+1 Discovered by Computationally Assisted High-Pressure Synthesis"
Inorg. Chem. 64, 16711 (2025). (arXiv:2508.15223) (Featured Article & Editors' Choice) (プレスリリース)
35. D. Takegami, S. Kitou, Y. Tokunaga, M. Yoshimura, K.-D. Tsuei, T. Arima, and T. Mizokawa
"Experimental determination of tetramer molecular orbital states in lacunar spinel GaNb4Se8 via hard x-ray photoemission spectroscopy"
Phys. Rev. B 111, 195155 (2025).
34. S. Kitou, H. Ishikawa, Y. Tokunaga, M. Ueno, H. Sawa, Y. Nakamura, Y. Kinoshita, T. Miyamoto, H. Okamoto, K. Kindo, and T. Arima
"Piezoelectric Transition in a Nonpyroelectric Gyroidal Metal-Organic Framework"
J. Am. Chem. Soc. 147, 13642 (2025). (arXiv:2503.20153) (cover picture) (プレスリリース)
33. T. Kurumaji, M. Gen, S. Kitou, H. Sagayama, H. Nakao, and T. Arima
"Canted antiferromagnetism in a spin-orbit coupled Seff = 3/2 triangular-lattice magnet DyAuGe"
Nat. Commun. 16, 2176 (2025). (arXiv:2401.16622)
32. T. Hara, S. Kitou, N. Katayama, H. Yoshino, and H. Sawa
"Diffuse Scattering and Low-temperature Crystal Structure of τ-Type Molecular Conductor"
J. Phys. Soc. Jpn. 94, 024602 (2025).
31. T. Kurumaji, M. Gen, S. Kitou, and T. Arima
"Metamagnetism and anomalous magnetotransport properties in rare-earth-based polar semimetals RAuGe (R= Dy, Ho, and Gd)"
Phys. Rev. B 110, 064409 (2024). (arXiv:2405.00628)
30. T. Hara, N. Katayama, S. Kitou, K. Kojima, S. Kawaguchi, and H. Sawa
"Pseudo-one-dimensional ribbon chain cluster realized under high pressure in 1T-VSe2"
Phys. Rev. B 110, L020103 (2024).
29. M. Ueno, T. Kurumaji, S. Kitou, M. Gen, Y. Nakamura, Y. Tokunaga, and T. Arima
"Contrasting magnetothermal conductivity in sibling Co-based honeycomb-lattice antiferromagnets"
Phys. Rev. B 110, L041116 (2024).
28. T. Kurumaji, S. Fang, Li. Ye, S. Kitou, and J. Checkelsky
"Metamagnetic multiband Hall effect in Ising antiferromagnet ErGa2"
Proc. Natl. Acad. Sci. USA 121, e2318411121 (2024).
27. T. Fujino, R. Kameyama, K. Onozuka, K. Matsuo, S. Dekura, T. Miyamoto, Z. Guo, H. Okamoto, T. Nakamura, K. Yoshimi, S. Kitou, T. Arima, H. Sato, K. Yamamoto, A. Takahashi, H. Sawa, Y. Nakamura, and H. Mori
"Orbital hybridization of donor and acceptor to enhance the conductivity of mixed-stack complexes"
Nat. Commun. 15, 3028 (2024). (プレスリリース)
26. S. Kitou, M. Gen, Y. Nakamura, Y. Tokunaga, and T. Arima
"Cluster Rearrangement by Chiral Charge Order in Lacunar Spinel GaNb4Se8"
Chem. Mater. 36, 2993 (2024). (arXiv:2401.03803). (プレスリリース)
25. S. Kitou, A. Nakano, M. Imaizumi, Y. Nakamura, I. Terasaki, and T. Arima
"Molecular orbital formation and metastable short-range ordered structure in VO2"
Phys. Rev. B 109, L100101 (2024). (arXiv:2310.10193)
24. K. Taniguchi, P.-J. Huang, H. Sagayama, R. Kiyanagi, K. Ohishi, S. Kitou, Y. Nakamura, and H. Miyasaka
"Tuning of spin-orbit coupling in chiral molecule-incorporated two-dimensional organic-inorganic hybrid perovskite copper halides with ferromagnetic exchange interactions"
Phys. Rev. Materials 8, 024409 (2024). (Editors' Suggestion)
23. D. Urushihara, C. Ando, M. Komabuchi, K. Fukuda, Y. Nakahira, C. Moriyoshi, S. Kitou, N. Abe, T. Arima, and T. Asaka
"Structural phase transition and spin state in perovskite cobalt oxide La1-xPrxCoO3 (x = 0.30, 0.34)"
Phys. Rev. B 109, 024115 (2024).
22. S. Kitou, M. Gen, Y. Nakamura, K. Sugimoto, Y. Tokunaga, S. Ishiwata, and T. Arima
"Real-Space Observation of Ligand Hole State in Cubic Perovskite SrFeO3"
Adv. Sci. 10, 2302839 (2023). (arXiv:2303.02571) (プレスリリース)
21. S. Kitou, Y. Kaneko, Y. Nakamura, K. Sugimoto, Y. Nomura, R. Arita, Y. Tokura, H. Sawa, and T. Arima
"Visualization of 4d orbital electrons in a pyrochlore-type oxide"
Phys. Rev. B 108, 024103 (2023).
20. N. Katayama, Y. Matsuda, K. Kojima, T. Hara, S. Kitou, N. Mitsuishi, H. Takahashi, S. Ishiwata, K. Ishizaka, and H. Sawa
"Observation of local atomic displacements intrinsic to the double zigzag chain structure of 1T-MTe2 (M = V, Nb, Ta)"
Phys. Rev. B 107, 245113 (2023). (arXiv:2306.05611)
19. T. Kurumaji, M. Gen, S. Kitou, K. Ikeuchi, M. Nakamura, A. Ikeda, and T. Arima
"Single crystal growths and magnetic properties of hexagonal polar semimetals RAuGe (R = Y, Gd―Tm, and Lu)"
J. Alloy. Compd. 947, 169475 (2023). (arXiv:2301.02794)
18. S. Kitou, Y. Oshima, A. Nakamura, K. Matsunaga, and H. Sawa
"Room-temperature plastic deformation modes of cubic ZnS crystals"
Acta Materialia 247, 118738 (2023).
17. M. Gen, R. Takagi, Y. Watanabe, S. Kitou, H. Sagayama, N. Matsuyama, Y. Kohama, A. Ikeda, Y. Onuki, T. Kurumaji, T. Arima, and S. Seki
"Rhombic skyrmion lattice coupled with orthorhombic structural distortion in EuAl4"
Phys. Rev. B 107, L020410 (2023). (arXiv:2209.12751)
16. T. Kurumaji, M. Gen, S. Kitou, H. Sagayama, A. Ikeda, and T. Arima
"Anisotropic magnetotransport properties coupled with spiral spin modulation in a magnetic semimetal EuZnGe"
Phys. Rev. Materials 6, 094410 (2022). (arXiv:2208.02385)
15. L. Spitz, T. Nomoto, S. Kitou, H. Nakao, A. Kikkawa, S. Francoual, Y. Taguchi, R. Arita, Y. Tokura, T. Arima, and M. Hirschberger
"Entropy-assisted, long-period stacking of honeycomb layers in an AlB2-type silicide"
J. Am. Chem. Soc. 144, 16866 (2022).
14. K. Ueda, H. Ishizuka, M. Kriener, S. Kitou, D. Maryenko, M. Kawamura, T. Arima, M. Kawasaki, and Y. Tokura
"Experimental signatures of versatile Weyl semimetal in pyrochlore iridate with spin-ice like magnetic orders"
Phys. Rev. B 105, L161102 (2022). (Editors' Suggestion) (arXiv:2202.09984).
13. 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?"
12. S. Kitou, L. Zhang, T. Nakamura, and H. Sawa
"Complex changes in structural parameters hidden in the universal phase diagram of the quasi-one-dimensional organic conductors (TMTTF)2X (X=NbF6, AsF6, PF6, and Br)"
Phys. Rev. B 103, 184112 (2021).
11. T. Nakamura, L. Zhang, S. Kitou, and H. Sawa
"Tetramethyltetrathiafulvalene [(NbOF4)1-]∞: One-Dimensional Charge Transfer Salt with an Infinite Anion Chain"
Inorg. Chem. 60, 5206 (2021). (プレスリリース)
10. S. Kitou, T. Tsumuraya, H. Sawahata, F. Ishii, K. Hiraki, T. Nakamura, N. Katayama, and H. Sawa
"Ambient-pressure Dirac electron system in the quasi-two-dimensional molecular conductor α-(BETS)2I3"
Phys. Rev. B 103, 035135 (2021). (arXiv:2006.08978). (簡単な解説)
9. S. Kitou, Y. Hosogi, R. Kitaura, T. Naito, T. Nakamura, and H. Sawa
"Direct Observation of Molecular Orbitals Using Synchrotron X-ray Diffraction"
Crystals 10, 998 (2020). (invited paper, Editor's Choice)
8. S. Kitou, T. Manjo, N. Katayama, T. Shishidou, T. Arima, Y. Taguchi, Y. Tokura, T. Nakamura, T. Yokoyama, K. Sugimoto, and H. Sawa
"Collapse of the simple localized 3d1 orbital picture in Mott insulator"
Phys. Rev. Research 2, 033503 (2020). (プレスリリース)
7. S. Kitou, T. Hasegawa, A. Nakano, N. Katayama, S. Tsutsui, and H. Sawa
"Intercalated Cu+ ion dynamics in the two-dimensional layered compound Cu0.33TiSe2"
Phys. Rev. B 101, 094108 (2020). (簡単な解説)
6. P. Bourgeois-Hope, F. Laliberté, E. Lefrançois, G. Grissonnanche, S. René de Cotret, R. Gordon, S. Kitou, H. Sawa, H. Cui, R. Kato, L. Taillefer, and N. Doiron-Leyraud
"Thermal conductivity of the quantum spin liquid candidate EtMe3Sb[Pd(dmit)2]2: No evidence of mobile gapless excitations"
Phys. Rev. X 9, 041051 (2019).
5. T. Naito, N. Watanabe, Y. Sakamoto, Y. Miyaji, T. Shirahata, Y. Misaki, S. Kitou, and H. Sawa
"A molecular crystal with an unprecedentedly long-lived photoexcited state"
Dalton Trans. 48, 12858 (2019).
4. S. Kitou, A. Nakano, S. Kobayashi, K. Sugawara, N. Katayama, N. Maejima, A. Machida, K. Ichimura, S. Tanda, T. Nakamura, and H. Sawa
"Effect of Cu intercalation and pressure on excitonic interaction in 1T-TiSe2"
Phys. Rev. B 99, 104109 (2019). (arXiv:1902.02046). (簡単な解説)
3. S. Kitou, S. Kobayashi, T. Kaneko, N. Katayama, S. Yunoki, T. Nakamura, and H. Sawa
"Honeycomb lattice type charge density wave associated with interlayer Cu ions ordering in 1T-CuxTiSe2"
Phys. Rev. B 99, 081111(R) (2019). (簡単な解説)
2. S. Kitou, T. Fujii, T. Kawamoto, N. Katayama, S. Maki, E. Nishibori, K. Sugimoto, M. Takata, T. Nakamura, and H. Sawa
“Successive Dimensional Transition in (TMTTF)2PF6 Revealed by Synchrotron X-ray Diffraction”
Phys. Rev. Lett. 119, 065701 (2017). (プレスリリース)
1. N. Katayama, K. Sugawara, A. Nakano, S. Kitou, Y. Sugiyama, N. Kawaguchi, H. Ito, T. Higuchi, T. Fujii, and H. Sawa
“Synchrotron x-ray diffraction study of 112-type Ca1-xLaxFeAs2”