Selected Papers
“High-Pressure Synthesis of Transition-Metal Oxyhydrides with Double Perovskite Structures”
Takeshi Yajima, Kanako Takahashi, Hotaka Nakajima, Takashi Honda, Kazutaka Ikeda, Toshiya Otomo, and Zenji Hiroi
Inorganic Chemistry, 61(4), 2010-2016 (2022).
ACS Editors' Choice
“Correlated Li-ion migration in the superionic conductor Li10GeP2S12”
Takeshi Yajima, Yoyo Hinuma, Satoshi Hori, Rui Iwasaki, Ryoji Kanno, Takashi Ohhara, Akiko Nakao, Koji Munakata, Zenji Hiroi
Journal of Materials Chemistry A, 9, 11278-11284 (2021).
Editor’s Choice: Solid-state ion conductors
“Selective and low temperature transition metal intercalation in layered tellurides”
Takeshi Yajima, Masaki Koshiko, Yaoqing Zhang, Tamio Oguchi, Wen Yu, Daichi Kato, Yoji Kobayashi, Yuki Orikasa, Takafumi Yamamoto, Yoshiharu Uchimoto, Mark A. Green, Hiroshi Kageyama
Nature Communications, 7, 13809 (2016).
“A labile hydride strategy for the synthesis of heavily nitridized BaTiO3”
Takeshi Yajima, Fumitaka Takeiri, Kohei Aidzu, Hirofumi Akamatsu, Koji Fujita, Wataru Yoshimune, Masatoshi Ohkura, Shiming Lei, Venkatraman Gopalan, Katsuhisa Tanaka, Craig M. Brown, Mark A. Green, Takafumi Yamamoto, Yoji Kobayashi, Hiroshi Kageyama
Nature Chemistry, 7, 1017-1023 (2015).
“Superconductivity in BaTi2Sb2O with a d1 Square Lattice”
Takeshi Yajima, Kousuke Nakano, Fumitaka Takeiri, Toshio Ono, Yuko Hosokoshi, Yoshitaka Matsushita, James Hester, Yoji Kobayashi, and Hiroshi Kageyama
Journal of the Physical Society of Japan, 81, 103706 (2012).
JPSJ Editors' Choice
JPSJ 2013 Highly Cited Article
“Epitaxial Thin Films of ATiO3-xHx (A = Ba, Sr ,Ca) with Metallic Conductivity”
Takeshi Yajima, Atsushi Kitada, Yoji Kobayashi, Tatsunori Sakaguchi, Guillaume Bouilly, Shigeru Kasahara, Takahito Terashima, Mikio Takano, and Hiroshi Kageyama
Journal of the American Chemical Society, 134, 8782-8785 (2012).
原著論文
85.
"Structural and Li-Ion Conduction Properties of Ti- and W-Substituted LiTa2PO8"
Souichi Shima, Takeshi Yajima, Norikazu Ishigaki, Yasutoshi Iriyama
Chemistry of Materials, 37, 1215−1220 (2025).
84.
"Electrochemical lithium-ion insertion/extraction reactions of multilayered graphene with random twist angles"
Satoshi Yamamoto, Ryotaro Sakakibara, Soichi Shima, Shinsuke Matsuura, Takeshi Yajima, Munekazu Motoyama, Wataru Norimatsu, Yuta Kimura, Koji Amezawa, Yasutoshi Iriyama
Chemical Communications, 60, 14790–14793 (2024).
83.
"Origin of O2 Generation in Sulfide-Based All-Solid-State Batteries and its Impact on High Energy Density"
Keisuke Yoshikawa, Takeshi Kato, Yasuhiro Suzuki, Akihiro Shiota, Tsuyoshi. Ohnishi, Koji Amezawa, Akiko Nakao, Takeshi Yajima, Yasutoshi Iriyama
Advanced Science, 11, 2402528 (2024).
82.
"Geometric frustration and Dzyaloshinskii-Moriya interactions in a quantum star lattice hybrid copper sulfate"
Hajime Ishikawa, Yuto Ishii, Takeshi Yajima, Yasuhiro H. Matsuda, Koichi Kindo, Yusei Shimizu, Ioannis Rousochatzakis, Ulrich K. Rößler, Oleg Janson
Physical Review B, 109, L180401 (2024).
81.
"Li concentration change around Cu/LiPON interface measured by TOF-ERDA"
Kyoshi Kurihara, Shuri Nakamizo, Satoshi Yamamoto, Keisuke Yasuda, Takuya Majima, Takeshi Yajima, Yasutoshi Iriyama
Journal of Solid State Electrochemistry (2024).
80.
"Breathing pyrochlore magnet CuGaCr4S8 : Magnetic, thermodynamic, and dielectric properties"
Masaki Gen, Hajime Ishikawa, Atsushi Miyake, Takeshi Yajima, Harald O. Jeschke, Hajime Sagayama, Akihiko Ikeda, Yasuhiro H. Matsuda, Koichi Kindo, Masashi Tokunaga, Taka-hisa Arima
Physical Review Materials, 7, 104404 (2023).
79.
"Kiryuite and gunmaite, two new minerals from Tsukubara, Kiryu City, Gunma Prefecture, Japan"
Daisuke Nishio–Hamane, Takeshi Yajima, Issei Ikari, Yoshiya Ohki, Hirofumi Hori, Yoshihiro Ohara
Journal of Mineralogical and Petrological Sciences, 230605 (2023).
78.
"Signatures of a magnetic superstructure phase induced by ultrahigh magnetic fields in a breathing pyrochlore antiferromagnet"
Masaki Gen, Akihiko Ikeda, Kazushi Aoyama, Harald O Jeschke, Yuto Ishii, Hajime Ishikawa, Takeshi Yajima, Yoshihiko Okamoto, Xuguang Zhou, Daisuke Nakamura, Shojiro Takeyama, Koichi Kindo, Yasuhiro H Matsuda, Yoshimitsu Kohama
Proceedings of the National Academy of Sciences, 120, e2302756120 (2023).
77.
"Superconductivity at 12 K in La2IOs2 : A 5d metal with osmium honeycomb layer"
Hajime Ishikawa, Takeshi Yajima, Daisuke Nishio-Hamane, Shusaku Imajo, Koichi Kindo, Mitsuaki Kawamura
Physical Review Materials, 7, 054804 (2023).
76.
"Space-Group Determination of Superlattice Structure Due to Electric Toroidal Ordering in Ca5Ir3O12"
Hiroki Hanate, Satoshi Tsutsui, Takeshi Yajima, Hironori Nakao, Hajime Sagayama, Takumi Hasegawa, Kazuyuki Matsuhira
Journal of the Physical Society of Japan, 92, 063601 (2023).
75.
"Spin-Peierls transition to a Haldane phase"
Hironori Yamaguchi, Hiroki Takahashi, Takashi Kawakami, Kiyomi Okamoto, Toru Sakai, Takeshi Yajima, Yoshiki Iwasaki
Physical Review B, 107, L161111 (2023).
74.
"Large magnetic-field-induced strains in sintered chromium tellurides"
Yuki Kubota, Yoshihiko Okamoto, Tomoya Kanematsu, Takeshi Yajima, Daigorou Hirai, Koshi Takenaka
Applied Physics Letters 122, 042404 (2023).
73.
“SmI3: 4f5 honeycomb magnet with spin-orbital entangled Γ7 Kramers doublet”
Hajime Ishikawa, Ryosuke Kurihara, Takeshi Yajima, Daisuke Nishio-Hamane, Yusei Shimizu, Toshiro Sakakibara, Akira Matsuo, and Koichi Kindo
Physical Review Materials, 6, 064405 (2022).
72.
“Ferroelectric Transition of a Chiral Molecular Crystal BINOL･2DMSO”
Toshihiro Nomura, Takeshi Yajima, Zhuo Yang, Ryosuke Kurihara, Yuto Ishii, Masashi Tokunaga, Yasuhiro H. Matsuda, Yoshimitsu Kohama, Kenta Kimura, and Tsuyoshi Kimura
Journal of the Physical Society of Japan, 91, 064702 (2022).
JPSJ Editors' Choice
71.
“Generating 77 T using a portable pulse magnet for single-shot quantum beam experiments”
Akihiko Ikeda, Yasuhiro H. Matsuda, Xuguang Zhou, Shiyue Peng, Yuto Ishii, Takeshi Yajima, Yuya Kubota, Ichiro Inoue, Yuichi Inubushi, Kensuke Tono, and Makina Yabashi
Applied Physics Letters, 120, 142403 (2022).
70.
“Large Magnetic-Field-Induced Strain at the Spin-Reorientation Transition in A-Site Ordered Spinel Oxide LiFeCr4O8”
Yoshihiko Okamoto, Tomoya Kanematsu, Yuki Kubota, Takeshi Yajima, and Koshi Takenaka
Journal of the Physical Society of Japan, 91, 023710 (2022).
69.
“High-Pressure Synthesis of Transition-Metal Oxyhydrides with Double Perovskite Structures”
Takeshi Yajima, Kanako Takahashi, Hotaka Nakajima, Takashi Honda, Kazutaka Ikeda, Toshiya Otomo, and Zenji Hiroi
Inorganic Chemistry, 61(4), 2010-2016 (2022).
ACS Editors' Choice
68.
“Dimer crystallization induced by elemental substitution in the honeycomb lattice of Ru1–xOsxCl3”
Kota Kataoka, Dirk Wulferding, Takeshi Yajima, Daisuke Nishio-Hamane, Daigorou Hirai, Seungyeol Lee, Kwang-Yong Choi, and Zenji Hiroi
Journal of the Physical Society of Japan, 91, 014801 (2022).
67.
“GdV6Sn6: a Multi-carrier Metal with Non-magnetic 3d-electron Kagome Bands and 4f-electron Magnetism”
Hajime Ishikawa, Takeshi Yajima, Mitsuaki Kawamura, Hiroyuki Mitamura, and Koichi Kindo
Journal of the Physical Society of Japan, 90, 124704 (2021).
66.
“Phase transition in the 5d1 double perovskite Ba2CaReO6 induced by high magnetic field”
Hajime Ishikawa, Daigorou Hirai, Akihiko Ikeda, Masaki Gen, Takeshi Yajima, Akira Matsuo, Yasuhiro H. Matsuda, Zenji Hiroi, and Koichi Kindo
Physical Review B, 104, 174422 (2021).
65.
“Emergent antiferromagnetic transition in hyperkagome manganese Zn2Mn3O8”
Suguru Kitani, Takeshi Yajima, and Hitoshi Kawaji
Physical Review Materials, 5, 094411 (2021).
64.
“Gapped ground state in a spin-1/2 frustrated square lattice”
H. Yamaguchi, N. Uemoto, T. Okubo, Y. Kono, S. Kittaka, T. Sakakibara, Takeshi Yajima, S. Shimono, Y. Iwasaki, and Y. Hosokoshi
Physical Review B, 104, L060411 (2021).
63.
“Correlated Li-ion migration in the superionic conductor Li10GeP2S12”
Takeshi Yajima, Yoyo Hinuma, Satoshi Hori, Rui Iwasaki, Ryoji Kanno, Takashi Ohhara, Akiko Nakao, Koji Munakata, Zenji Hiroi
Journal of Materials Chemistry A, 9, 11278-11284 (2021).
Editor’s Choice: Solid-state ion conductors (→ link)
62.
“Ligand dependent magnetism of the Jeff = 3/2 Mott insulator Cs2MX6 (M = Ta, Nb, X = Br, Cl)”
Hajime Ishikawa, Takeshi Yajima, Akira Matsuo, and Koichi Kindo
J. Phys.: Condens. Matter, 33, 125802 (2021).
61.
“Pressure-Induced Collapse Transition in BaTi2Pn2O (Pn = As, Sb) with an Unusual Pn-Pn Bond Elongation”
Takafumi Yamamoto, Takeshi Yajima, Zhi Li, Takateru Kawakami, Kousuke Nakano, Takami Tohyama, Takehiko Yagi, Yoji Kobayashi, and Hiroshi Kageyama
Inorganic Chemistry, 60(4), 2228-2233 (2021).
60.
“Structural Phase Diagram of LaO1–xFxBiSSe: Suppression of the Structural Phase Transition by Partial F Substitutions”
Kazuhisa Hoshi, Shunsuke Sakuragi, Takeshi Yajima, Yosuke Goto, Akira Miura, Chikako Moriyoshi, Yoshihiko Kuroiwa, and Yoshikazu Mizuguchi
Condensed Matter, 5(4), 81 (2020).
59.
“Single shot x-ray diffractometry in SACLA with pulsed magnetic fields up to 16 T”
Akihiko Ikeda, Yasuhiro Matsuda, Xuguang Zhou, Takeshi Yajima, Yuya Kubota, Kensuke Tono, and Makina Yabashi
Physical Review Research, 2, 043175 (2020).
58.
“Kitaev Spin Liquid Candidate OsxCl3 Comprised of Honeycomb Nano-Domains”
Kota Kataoka, Daigorou Hirai, Takeshi Yajima, Daisuke Nishio-Hamane, Rieko Ishii, Kwang-Yong Choi, Dirk Wulferding, Peter Lemmens, Shunichiro Kittaka, Toshiro Sakakibara, Hajime Ishikawa, Akira Matsuo, Koichi Kindo, and Zenji Hiroi
Journal of the Physical Society of Japan, 89, 114709 (2020).
57.
“Anisotropic Fully Gapped Superconductivity Possibly Mediated by Charge Fluctuations in a Nondimeric Organic Complex”
S. Imajo, H. Akutsu, R. Kurihara, Takeshi Yajima, Y. Kohama, M. Tokunaga, K. Kindo, and Y. Nakazawa
Physical Review Letters 125, 177002 (2020).
56.
“Anisotropic Triangular Lattice Realized in Rhenium Oxychlorides A3ReO5Cl2 (A = Ba, Sr)”
Daigorou Hirai, Takeshi Yajima, Kazuhiro Nawa, Mitsuaki Kawamura, and Zenji Hiroi
Inorganic Chemistry, 59(14), 10025-10033 (2020).
55.
“Thermal Expansion and Volume Magnetostriction in Breathing Pyrochlore Magnets LiACr4X8 (A = Ga, In, X = O, S)”
Tomoya Kanematsu, Masaki Mori, Yoshihiko Okamoto, Takeshi Yajima, and Koshi Takenaka
Journal of the Physical Society of Japan, 89(7), 073708 (2020).
54.
“Nonmagnetic ground states and a possible quadrupolar phase in 4d and 5d lacunar spinel selenides GaM4Se8 (M = Nb, Ta)”
Hajime Ishikawa, Takeshi Yajima, Akira Matsuo, Yoshihiko Ihara, and Koichi Kindo
Physical Review Letters 124, 227202 (2020).
53.
“Observation of a Novel Phase Transition in Sr7Re4O19”
Yutaka Ueda, Mina Murase, Yoshiaki Kobayashi, Masayuki Itoh, Takeshi Yajima, Tomoki Yamaguchi, Ryo Takahashi, Koudai Sugimoto, and Yukinori Ohta
Journal of the Physical Society of Japan, 89(5), 054703 (2020).
52.
“Spin–orbit-coupled metal candidate PbRe2O6”
Satoshi Tajima, Daigorou Hirai, Takeshi Yajima, Daisuke Hamane, and Zenji Hiroi
Journal of Solid State Chemistry, 288, 121359 (2020).
51.
“Titanium Hydride Complex BaCa2Ti2H14 with a Ninefold Coordination”
Takeshi Yajima, Hotaka Nakajima, Takashi Honda, Kazutaka Ikeda, Toshiya Otomo, Hikaru Takeda, and Zenji Hiroi
Inorganic Chemistry, 59(7), 4228-4233 (2020).
50.
“Topochemical anion insertion into one-dimensional Bi channels in Bi2PdO4”
Fumitaka Takeiri, Takeshi Yajima, Saburo Hosokawa, Yoshitaka Matsushita, and Hiroshi Kageyama
Journal of Solid State Chemistry, 286, 121273 (2020).
49.
“Enhanced orbital fluctuations in Mg-doped MnV2O4 single crystals”
Qing-Yuan Liu, Zi-Yi Liu, Xue-Bo Zhou, Takeshi Yajima, Yoshiya Uwatoko, Jin-Guang Cheng, Lei Tao, Zhi-Guo Liu, Ming-Xue Huo, Xian-Jie Wang, and Yu Sui
Physical Review B, 100(22), 224418 (2019).
48.
“High magnetic field x-ray diffraction study of the alpha phase of solid oxygen: Absence of giant magnetostriction”
Yasuhiro H. Matsuda, Ayumi Shimizu, Akihiko Ikeda, Toshihiro Nomura, Takeshi Yajima, Toshiya Inami, Kohki Takahashi, and Tatsuo C. Kobayashi
Physical Review B, 100(21), 214105 (2019).
47.
“Thermal-Transport Studies of Kagome Antiferromagnets”
Minoru Yamashita, Masatoshi Akazawa, Masaaki Shimozawa, Takasada Shibauchi, Yuji Matsuda, Hajime Ishikawa, Takeshi Yajima, Zenji Hiroi, Migaku Oda, Hiroyuki Yoshida, Hyun-Yong Lee, Jung Hoon Han, and Naoki Kawashima
J. Phys.: Condens. Matter, 32, 074001 (2019).
46.
“Exploring Structures and Properties through Anion Chemistry”
Hiroshi Kageyama, Takeshi Yajima, Yoshihiro Tsujimoto, Takafumi Yamamoto, Cédric Tassel, and Yoji Kobayashi
Bulletin of the Chemical Society of Japan, 92(8), 1349-1357 (2019).
45.
“Strongly anisotropic high-temperature Fermi surface of the Kondo semimetal CeNiSn revealed by angle-resolved photoemission spectroscopy”
Cédric Bareille, T.-S. Nam, Toshiro Takabatake, Kenta Kuroda, Takeshi Yajima, Mitsuhiro Nakayama, So Kunisada, Shuntaro Akebi, Masato Sakano, Shunsuke Sakuragi, Ryo Noguchi, Byung Il Min, Shik Shin, and Takeshi Kondo
Physical Review B, 100(4), 045133 (2019).
44.
“Weak Anisotropic Lithium-Ion Conductivity in Single Crystals of Li10GeP2S12”
Rui Iwasaki, Satoshi Hori, Ryoji Kanno, Takeshi Yajima, Daigorou Hirai, Yuki Kato, and Zenji Hiroi
Chemistry of Materials, 31, 3694-3699 (2019).
43.
“Magnetoelastic couplings in the deformed kagome quantum spin lattice of volborthite”
Akihiko Ikeda, Shunsuke Furukawa, Oleg Janson, Yasuhiro H. Matsuda, Shojiro Takeyama, Takeshi Yajima, Zenji Hiroi, and Hajime Ishikawa
Physical Review B, 99(14), 140412 (2019).
42.
“S= 1/2 ferromagnetic Heisenberg chain in a verdazyl-based complex”
N. Uemoto, Y. Kono, S. Kittaka, T. Sakakibara, Takeshi Yajima, Y. Iwasaki, S. Miyamoto, Y. Hosokoshi, and H. Yamaguchi
Physical Review B, 99(9), 094418 (2019)
41.
“Anisotropy of Dirac cones and van Hove singularity in an organic Dirac fermion system”
Ayaka Mori, Mitsuyuki Sato, Takeshi Yajima, Takako Konoike, Kazuhito Uchida, and Toshihito Osada
Physical Review B, 99(3), 035106 (2019).
40.
“Nematic transition and highly two-dimensional superconductivity in BaTi2Bi2O revealed by Bi 209-nuclear magnetic resonance/nuclear quadrupole resonance measurements”
Shunsaku Kitagawa, Kenji Ishida, Wataru Ishii, Takeshi Yajima, and Zenji Hiroi
Physical Review B, 98(22), 220507 (2018).
39.
“Frustrated Magnetism of Pharmacosiderite Comprising Tetrahedral Clusters Arranged in the Primitive Cubic Lattice”
Ryutaro Okuma, Takeshi Yajima, Tatsuo Fujii, Mikio Takano, and Zenji Hiroi
Journal of the Physical Society of Japan, 87(9), 093702 (2018).
38.
“Site Selectivity of Hydride in Early-Transition-Metal Ruddlesden–Popper Oxyhydrides”
Olivier J. Hernandez, Gregory Geneste, Takeshi Yajima, Yoji Kobayashi, Masatoshi Okura, Kohei Aidzu, Cédric Tassel, Serge Paofai, Diptikanta Swain, Clemens Ritter, and Hiroshi Kageyama
Inorganic chemistry, 57(17), 11058-11067 (2018).
37.
“Inelastic Neutron Scattering Study of the Spin Dynamics in the Breathing Pyrochlore System LiGa0.95In0.05Cr4O8”
Yu Tanaka, Rafal Wawrzyńczak, Manh Duc Le, Tatiana Guidi, Yoshihiko Okamoto, Takeshi Yajima, Zenji Hiroi, Masashi Takigawa, and Gøran J. Nilsen
Journal of the Physical Society of Japan, 87(7), 073710 (2018).
36.
“Initial relocation behavior of control rod materials in boiling water reactors studied via time-resolved visualization”
Shota Ueda, Byeongnam Jo, Masahiro Kondo, Nejdet Erkan, Takeshi Yajima, and Koji Okamoto
Nuclear Engineering and Design, 333, 99-114 (2018).
35.
“Suppression of H-/O2- exchange by incorporated nitride anions in the perovskite lattice”
Fumitaka Takeiri, Takeshi Yajima, Takafumi Yamamoto, Yoji Kobayashi, Toshiaki Matsui, James Hester, Hiroshi Kageyama
Journal of Solid State Chemistry, 256, 33-37 (2017).
34.
“Promoted Hydride/Oxide Exchange in SrTiO3 by Introduction of Anion Vacancy via Aliovalent Cation Substitution”
Fumitaka Takeiri, Kohei Aidzu, Takeshi Yajima, Toshiaki Matsui, Takafumi Yamamoto, Yoji Kobayashi, James Hester, Hiroshi Kageyama
Inorganic Chemistry, 56(21), 13035-13040 (2017).
33.
“Maximizing Tc by tuning nematicity and magnetism in FeSe1-xSx superconductors”
Kohei Matsuura, Yuta Mizukami, Y. Arai, Y. Sugimura, N. Maejima, A. Machida, T. Watanuki, T. Fukuda, Takeshi Yajima, Zenji Hiroi, K. Y. Yip, Y. C. Chan, Q. Niu, Suguru Hosoi, Kousuke Ishida, K. Mukasa, Shigeru Kasahara, J-G. Cheng, Swee K. Goh, Yuji Matsuda, Yoshiya Uwatoko, Takasada Shibauchi
Nature Communications, 8, 1143 (2017).
32.
“Possible Itinerant-Electron Canted Antiferromagnetism in Tetragonal Antiperovskite Cr3AsN”
Takeshi Waki, Kenta Takao, Yoshikazu Tabata, Hiroto Ota, Takeshi Yajima, Zenji Hiroi, Hiroyuki Nakamura
Journal of the Physical Society of Japan, 86, 104706 (2017).
31.
“Topochemical Crystal Transformation from a Distorted to a Nearly Perfect Kagome Cuprate”
Hajime Ishikawa, Takeshi Yajima, Atsushi Miyake, Masashi Tokunaga, Akira Matsuo, Koichi Kindo, Zenji Hiroi
Chemistry of Materials, 29(16), 6719-6725 (2017).
30.
“"Visible" 5d Orbital States in a Pleochroic Oxychloride”
Daigorou Hirai, Takeshi Yajima, Daisuke Nishio-Hamane, Changsu Kim, Hidefumi Akiyama, Mitsuki Kawamura, Takahiro Misawa, Nobuyuki Abe, Taka-hisa Arima, Zenji Hiroi
Journal of the American Chemical Society, 139(31), 10784-10789 (2017).
29.
“Weak ferromagnetic order breaking the threefold rotational symmetry of the underlying kagome lattice in CdCu3(OH)6(NO3)2 center dot H2O”
Ryutaro Okuma, Takeshi Yajima, Daisuke Nishio-Hamane, Tsuyoshi Okubo, Zenji Hiroi
Physical Review B, 95, 094427 (2017).
28.
“J1–J2 Square-Lattice Heisenberg Antiferromagnets with 4d1 spins: AMoOPO4Cl (A = K, Rb)”
Hajime Ishikawa, Nanako Nakamura, Makoto Yoshida, Masashi Takigawa, Peter Babkevich, Navid Qureshi, Henrik M. Rønnow, Takeshi Yajima, Zenji Hiroi
Physical Review B, 95, 064408 (2017).
27.
“Titanium Pnictide Oxide Superconductors”
Takeshi Yajima
Condensed Matter, 2(1), 4 (2017).
26.
“Selective and low temperature transition metal intercalation in layered tellurides”
Takeshi Yajima, Masaki Koshiko, Yaoqing Zhang, Tamio Oguchi, Wen Yu, Daichi Kato, Yoji Kobayashi, Yuki Orikasa, Takafumi Yamamoto, Yoshiharu Uchimoto, Mark A. Green, Hiroshi Kageyama
Nature Communications, 7, 13809 (2016).
25.
“Emergence of nontrivial magnetic excitations in a spin-liquid state of kagome volborthite”
Daiki Watanabe, Kaori Sugii, Masaaki Shimozawa, Yoshitaka Suzuki, Takeshi Yajima, Hajime Ishikawa, Zenji Hiroi, Takasada Shibauchi, Yuji Matsuda, Minoru Yamashita
24.
“A labile hydride strategy for the synthesis of heavily nitridized BaTiO3”
Takeshi Yajima, Fumitaka Takeiri, Kohei Aidzu, Hirofumi Akamatsu, Koji Fujita, Wataru Yoshimune, Masatoshi Ohkura, Shiming Lei, Venkatraman Gopalan, Katsuhisa Tanaka, Craig M. Brown, Mark A. Green, Takafumi Yamamoto, Yoji Kobayashi, Hiroshi Kageyama
Nature Chemistry, 7, 1017-1023 (2015).
23.
“Electrical Properties of Epitaxial Thin Films of Oxyhydrides ATiO3–xHx (A = Ba and Sr)”
Guillaume Bouilly, Takeshi Yajima, Takahito Terashima, Wataru Yoshimune, Kousuke Nakano, Cédric Tassel, Yoshiro Kususe, Koji Fujita, Katsuhisa Tanaka, Takafumi Yamamoto, Yoji Kobayashi, and Hiroshi Kageyama
Chemistry of Materials, 27(18), 6354-6359 (2015).
22.
“Orbital Arrangements and Magnetic Interactions in the Quasi-One-Dimensional Cuprates ACuMoO4(OH) (A = Na, K)”
Kazuhiro Nawa, Takeshi Yajima, Yoshihiko Okamoto, Zenji Hiroi
Inorganic Chemistry, 54(11), 5566-5570 (2015).
21.
“Superconductivity in 122-type antimonide BaPt2Sb2”
Motoharu Imai, Soshi Ibuka, Naoki Kikugawa, Taichi Terashima, Shinya Uji, Takeshi Yajima, Hiroshi Kageyama, and Izumi Hase
Physical Review B, 91, 014513 (2015).
20.
“Substrate-induced anion rearrangement in epitaxial thin films of LaSrCoO4−xHx”
Guillaume Bouilly, Takeshi Yajima, Takahito Terashima, Yoshiro Kususe, Koji Fujita, Cédric Tassel, Takafumi Yamamoto, Katsuhisa Tanaka, Yoji Kobayashi, and Hiroshi Kageyama
CrystEngComm, 16, 9669-9674 (2014).
19.
“Superconductivity in LaPd2As2 with a collapsed 122 structure”
Subodh Ganesanpotti, Takeshi Yajima, Kousuke Nakano, Yasumasa Nozaki, Takafumi Yamamoto, Cédric Tassel, Yoji Kobayashi, and Hiroshi Kageyama
Journal of Alloys and Compounds, 613, 370-374 (2014).
18.
“Superconductivity in the Hypervalent Compound Ba2Bi(Sb1−xBix)2 with a Square-Honeycomb Lattice”
Takeshi Yajima, Fumitaka Takeiri, Yasumasa Nozaki, Zhi Li, Takami Tohyama, Mark A. Green, Yoji Kobayashi, and Hiroshi Kageyama
Journal of the Physical Society of Japan, 83, 073705 (2014).
17.
“Charge Disproportionation and Magnetoresistivity in a Double Perovskite with Alternate Fe4+(d4) and Mn4+(d3) Layers”
Subodh Ganesanpotti, Cédric Tassel, Naoaki Hayashi, Yoshihiro Goto, Guillaume Bouilly, Takeshi Yajima, Yoji Kobayashi, and Hiroshi Kageyama
European Journal of Inorganic Chemistry, 15, 2576-2581 (2014).
16.
“LaPd2Sb2: a Pnicitide Superconductor with CaBe2Ge2 type Structure”
Subodh Ganesanpotti, Takeshi Yajima, Takami Tohyama, Zhi Li, Kousuke Nakano, Yasumasa Nozaki, Cédric Tassel, Yoji Kobayashi, and Hiroshi Kageyama
Journal of Alloys and Compounds, 583, 151-154 (2014).
15.
“Muon spin relaxation and electron/neutron diffraction studies of BaTi2(As1−xSbx)2O: Absence of static magnetism and superlattice reflections”
Yasumasa Nozaki, Kousuke Nakano, Takeshi Yajima, Hiroshi Kageyama, B. Frandsen, L. Liu, S. Cheung, T. Goko, Y. J. Uemura, T. S. J. Munsie, T. Medina, G. M. Luke, and J. Munevar, Daisuke Nishio-Hamane, and C. M. Brown
Physcal Review B, 88, 214506 (2013).
14.
“A-site Ordered Perovskite MnCu3V4O12 with a Twelve Coordinated Manganese (II)”
Yasuhide Akizuki, Ikuya Yamada, Koji Fujita, Norimasa Nishiyama, Tetuo Irifune, Takeshi Yajima, Hiroshi Kageyama, and Katsuhisa Tanaka
Inorganic Chemistry, 52(19), 11538-11543 (2013).
13.
“Hierarchically Porous Monoliths Based on N-doped Reduced Titanium Oxides from Ethylenediamine-bridged Titanium Gels”
George Hasegawa, Tatsuya Sato, Kazuyoshi Kanamori, Kousuke Nakano, Takeshi Yajima, Yoji Kobayashi, Hiroshi Kageyama, Takeshi Abe, and Kazuki Nakanishi
Chemistry of Materials, 25(17), 3504-3512 (2013).
12.
“Molecular Rotors of Coronene in Charge-Transfer Solids”
Yukihiro Yoshida, Yasuhiro Shimizu, Takeshi Yajima, Goro Maruta, Sadamu Takeda, Yoshiaki Nakano, Takaaki Hiramatsu, Hiroshi Kageyama, Hideki Yamochi, and Gunzi Saito
Chemistry A European Journal, 19(37), 12313-12324 (2013).
11.
“Tc Enhancement by Aliovalent Anionic Substitution in Superconducting BaTi2(Sb1-xSnx)2O”
Kousuke Nakano, Takeshi Yajima, Fumitaka Takeiri, Mark A Green, James Hester, Yoji Kobayashi, and Hiroshi Kageyama
Journal of the Physical Society of Japan, 82, 074707 (2013).
10.
“S wave Superconductivity in Newly Discovered Superconductor BaTi2Sb2O Revealed by 121/123Sb-NMR/Nuclear Quadrupole Resonance measurements”
Syunsaku Kitagawa, Kenji Ishida, Kousuke Nakano, Takeshi Yajima, and Hiroshi Kageyama
Physical Review B, 87, 060510 (2013).
9.
“Two Superconducting Phases in the Isovalent Solid Solutions BaTi2Pn2O (Pn = As, Sb, and Bi)”
Takeshi Yajima, Kousuke Nakano, Fumitaka Takeiri, Yasumasa Nozaki, Yoji Kobayashi, and Hiroshi Kageyama
Journal of the Physical Society of Japan, 82, 033705 (2013).
8.
“Synthesis and Physical Properties of the New Oxybismuthides BaTi2Bi2O and (SrF)2Ti2Bi2O with a d1 Square Net”
Takeshi Yajima, Kousuke Nakano, Fumitaka Takeiri, James Hester, Takafumi Yamamoto, Yoji Kobayashi, Naruki Tsuji, Jungeun Kim, Akihiko Fujiwara, and Hiroshi Kageyama
Journal of the Physical Society of Japan, 82, 013703 (2013).
7.
“Copper(II) solvatochromic complexes [Cu(acac)(N^N)(ligand)]BPh4 with various axial ligands. Correlation between coordination geometries and d-d transition energies (acac = acetylacetonato, N^N = 1,10-phenanthoroline, 2,2'-bipyridyl)”
Ryo Horikoshi, Yusuke Funasako, Takeshi Yajima, Tomoyuki Mochida, Yoji Kobayashi, and Hiroshi Kageyama
6.
“Oxyhydrides of (Ca,Sr,Ba)TiO3 perovskite solid solutions”
Tatsunori Sakaguchi, Yoji Kobayashi, Takeshi Yajima, Masatoshi Ohkura, Tassel Cedric, Fumitaka Takeiri, Shingo Mitsuoka, Hiroshi Ohkubo, Takafumi Yamamoto, Jungeun Kim, Akihiko Fujiwara, Naruki Tsuji, Yoshitaka Matsushita, James Hester, Max Avdeev, Kenji Ohoyama, and Hiroshi Kageyama
Inorganic Chemistry, 51, 11371-11376 (2012).
5.
“Superconductivity in BaTi2Sb2O with a d1 Square Lattice”
Takeshi Yajima, Kousuke Nakano, Fumitaka Takeiri, Toshio Ono, Yuko Hosokoshi, Yoshitaka Matsushita, James Hester, Yoji Kobayashi, and Hiroshi Kageyama
Journal of the Physical Society of Japan, 81, 103706 (2012).
JPSJ Editors' Choice
JPSJ 2013 Highly Cited Article
4.
“Epitaxial Thin Films of ATiO3−xHx (A = Ba, Sr ,Ca) with Metallic Conductivity”
Takeshi Yajima, Atsushi Kitada, Yoji Kobayashi, Tatsunori Sakaguchi, Guillaume Bouilly, Shigeru Kasahara, Takahito Terashima, Mikio Takano, and Hiroshi Kageyama
Journal of the American Chemical Society, 134, 8782-8785 (2012).
3.
“An oxyhydride of BaTiO3 exhibiting hydride exchange and electronic conductivity”
Yoji Kobayashi, Olivier J. Hernandez, Tatsunori Sakaguchi, Takeshi Yajima, Thierry Roisnel, Yoshihiro Tsujimoto, Masaki Morita, Yasuto Noda, Yuuki Mogami, Atsushi Kitada, Masatoshi Ohkura, Saburo Hosokawa, Zhaofei Li, Katsuro Hayashi, Yoshihiro Kusano, Jung eun Kim, Naruki Tsuji, Akihiko Fujiwara, Yoshitaka Matsushita, Kazuyoshi Yoshimura, Kiyonori Takegoshi, Masashi Inoue, Mikio Takano, and Hiroshi Kageyama
Nature Materials, 11, 507-511 (2012).
2.
“Spatial Redistribution of Oxygen Ions in Oxide Resistance Switching Device after Forming Process”
Takeshi Yajima, Kohei Fujiwara, Aiko Nakao, Tomohiro Kobayashi, Toshiyuki Tanaka, Kei Sunouchi, Yoshiaki Suzuki, Mai Takeda, Kentaro Kojima, Yoshinobu Nakamura, Kouji Taniguchi, and Hidenori Takagi
Japanese Journal of Applied Physics, 49, 060215 (2010).
1.
“Electrode-Geometry Control of the Formation of a Conductive Bridge in Oxide Resistance Switching Devices”
Kohei Fujiwara, Takeshi Yajima, Yoshinobu Nakamura, Marcelo J. Rozenberg, and Hidenori Takagi
Applied Physics Express, 2, 081401 (2009).
Proceedings
6. “Electronic Nematicities in the Titanium Pnictide Oxide Superconductors BaTi2(As1−xSbx)2O”
Takeshi Yajima, Wataru Ishii, Zenji Hiroi
JPS Conference Proceedings, 30, 011049 (2020).
5. “Muon Spin Rotation, High-Field Magnetization, and Structural Study on a Spin–Orbit-Entangled Mott Insulator Ba2MgReO6”
Daigorou Hirai, Akihiko Koda, Akira Matsuo, Koichi Kindo, Takeshi Yajima, Zenji Hiroi
JPS Conference Proceedings, 30, 011143 (2020).
4. “Magnetostriction studies up to megagauss fields using fiber Bragg grating technique”
Akihiko Ikeda, Yasuhiro H. Matsuda, Daisuke Nakamura, Shojiro Takeyama, Hiroshi Tsuda, Kazuya Nomura, Ayumi Shimizu, Akira Matsuo, Toshihiro Nomura, Tatsuo C. Kobayashi, Takeshi Yajima, Hajiime Ishikawa, Zenji Hiroi, Masahiko Isobe, Touru Yamauchi, Keisuke Sato
3. “Electronic phase diagram of the titanium oxypnictide superconductor BaTi2(Sb1–xBix)2O”
Wataru Ishii, Takeshi Yajima, Zenji Hiroi
Journal of Physics: Conference Series, 969, 012052 (2018).
2.
“Superconducting properties of BaTi2Pn2O (Pn = Sb, Bi)”
Takeshi Yajima, Kousuke Nakano, Yasumasa Nozaki, and Hiroshi Kageyama
Physica C: Superconductivity, 504, 36-38 (2014).
1.
“Two-dimensional Frustrated Antiferromagnets (MCl)LaNb(2)O(7) (M = Mn, Co, Cr)”
Atsushi Kitada, Yoshihiro Tsujimoto, Takeshi Yajima, Kazuyoshi Yoshimura, Yoshitami Ajiro, Yoji Kobayashi, and Hiroshi Kageyama
解説・総説
7.
"電極－固体電解質界面の接合時に生じる課題と対策"
入山 恭寿, 丸野 守啓, 坂倉 美雪, 矢島 健
セラミックス 59(10), 658-662 (2024).
6.
“固体電解質Li10GeP2S12におけるイオン間相互作用の解明：単結晶中性子回折と第一原理計算によるアプローチ”
矢島 健, 堀 智
日本結晶学会誌 63(4), 280-286 (2021).
5.
“層状化合物が重金属を選択的に吸収した！”
矢島 健, 小口 多美夫, 陰山 洋
4.
Ti2O正方格子を有する新超伝導体BaTi2Pn2O (Pn = Sb, Bi)
矢島 健
低温物質科学研究センター誌 23, 3-10 (2013).
3.
ペロブスカイト型酸水素化物
矢島 健, 坂口 辰徳, 辻本 吉廣, 小林 洋治, 陰山 洋
2.
d1 正方格子をもつ新超伝導体BaTi2Pn2O (Pn = Sb，Bi)
矢島 健, 中野 晃佑, 陰山 洋
1.
ヒドリド(H−)を含有するチタン酸バリウム
小林 洋治, 矢島 健, 陰山 洋
特許
1.
特願2011-151738, 2011年7月8日
京都大学・東京工業大学
水素化物イオンを含有するペロブスカイト型酸化物とその製造方法.