2024

　・Molecular Formation and Precursory Local Distortion in Layered LiVX2 (X = O, S, Se)

N. Katayama*, K. Kojima

Journal of the Physical Society of Japan 93 (2024) 111004. (Invite review paper, open select)

　・Electric field-induced volume change in pyro-vanadate-phosphates: Toward an alternative actuator architecture

K. Takada, J. Shibutani, K. Yagi, F. Ikawa, Y. Yokoyama, D. Hirai, Y. Okamoto, N. Katayama, Y. Umena, L.M.G.H. Chavas, T. Hatano, A. Fujita, K. Takenaka* 

Applied Physics Letters 125 (2024) 041903.

　・Unveiling the nature of chemical bonds in real space

T. Hara, M. Hasebe, T. Tsuneda, T. Naito, Y. Nakamura, N. Katayama, T. Taketsugu, H. Sawa* 

Journal of the American Chemical Society 146 (2024) 23825-23830. (Open Access)

　・Pseudo-one-dimensional ribbon chain cluster realized under high pressure in 1T-VSe2 

T. Hara, N. Katayama*, S. Kitou, K. Kojima, S. Kawaguchi, H. Sawa

Physical Review B 110 (2024) L020103. 

　・Giant impurity effect on anomalous Hall effect of Mn3Sn

R. Yano, S. Kihara, M. Yoneda, H. T. N. Vu, H. Suto, N. Katayama, T. Yamaguchi, M. Kuwahara, M.-T. Suzuki, K. Saitoh, S. Kashiwaya* 

The Journal of Chemical Physics 160 (2024) 184708.

　・Odd-parity multipole order in the spin-orbit coupled metallic pyrochlore Pb2Re2O7-δ

Y. Nakayama, D. Hirai*, H. Sagayama, K. Kojima, N. Katayama, J. Lehmann, Z. Wang, N. Ogawa, K. Takenaka 

Physical Review Materials 8 (2024) 055001.

　・Metastable ordered states induced by low-temperature annealing of δ-Ag2/3V2O5 

T. Kubo, K. Kojima, N. Katayama*, T. Runčevski, R.E. Dinnebier, A.S. Gibbs, M. Isobe, H. Sawa 

Physical Review B 109 (2024) 104115.

2023

　・Electroactive actuator composites using volume change induced by insulator-to-metal transition in VO2

K. Takenaka*, Y. Mizuno, J. Shibutani, K. Kishida, K. Takada, K. Yagi, Y. Yokoyama, N. Katayama, Y. Okamoto, D. Hirai, T. Hatano, A. Fujita 

Applied Physics Letters 123 (2023) 231905.

　・Structural and Electronic Properties of a Triangular Lattice Magnet NaPrTe2 Compared with NaNdTe2 and NaTbTe2

K. Eto, Y. Okamoto*, N. Katayama, H. Ishikawa, K. Kindo, K. Takenaka

Journal of the Physical Society of Japan 92 (2023) 094707.

　・Zigzag chain order of LiVSe2 developing away from the vanadium trimer phase transition boundary

K. Kojima, N. Katayama*, K. Sugimoto, N. Hirao, Y. Ohta, H. Sawa

Physical Review B 108 (2023) 094107.

　・Superconductivity in High-Entropy Antimonide M1–xPtxSb (M = Equimolar Ru, Rh, Pd, and Ir)

D. Hirai*, N. Uematsu, K. Saitoh, N. Katayama, K. Takenaka

Inorganic Chemistry 62 (2023) 14207-14215.

　・Zn2P2O7 の構造相転移を活用した負熱膨張材料の開発

春日井涼太， 門脇義史， 片山尚幸， 平井大悟郎， 竹中康司

粉体および粉末冶金 70 (2023) 371-375

　・Fermi surface and light quasi particles in hourglass nodal chain metal β-ReO2

D. Hirai*, T. Anbai, T. Konoike, S. Uji, Y. Hattori, T. Terashima, H. Ishikawa, K. Kindo, N. Katayama, T. Oguchi, Z. Hiroi 

Journal of Physics: Condensed Matter 35 (2023) 405503.

　・Observation of local atomic displacements intrinsic to the double zigzag chain structure of 1T-MTe2 (M = V, Nb, Ta)

N. Katayama*, Y. Matsuda, K. Kojima, T. Hara, S. Kitou, N. Mitsuishi, H. Takahashi, S. Ishiwata, K. Ishizaka, H. Sawa 

Physical Review B 107 (2023) 245113.

　・Temporal Evolution and Fluence Dependence of Band Structure in Photoexcited Ta2Ni0.9Co0.1Se5 Probed by Time- and Angle-Resolved Photoemission Spectroscopy 

Y. Takahashi, T. Suzuki, M. Hattori, M. Okawa, H. Takagi, N. Katayama, H. Sawa, M. Nohara, Y. Zhong, K. Liu, T. Kanai, J. Itatani, S. Shin, K. Okazaki, T. Mizokawa 

Journal of the Physical Society of Japan 92 (2023) 064706. (Editors' Choice)

　・Systematic Study on the Role of the Third Zn-Site Element in Zn2−xMgxP2O7 Showing Giant Negative Thermal Expansion

R. Kasugai, Y. Kadowaki, Y. Yokoyama, N. Katayama, Y. Okamoto, K. Takenaka* 

Materials transactions 64 (2023) 638-642.

　・Quasi One-Dimensional Band Structure of Photoinduced Semimetal Phase of Ta2Ni1−xCoxSe5 (x = 0.0 and 0.1)

T. Mitsuoka, Y. Takahashi, T. Suzuki, M. Okawa, H. Takagi, N. Katayama, H. Sawa, M. Nohara, M. Watanabe, J. Xu, Q. Ren, M. Fujisawa, T. Kanai, J. Itatani, K. Okazaki, S. Shin, T. Mizokawa 

Journal of the Physical Society of Japan 92 (2023) 023703. (Open Select)

　・Pressure suppression of the excitonic insulator state in Ta2NiSe5 observed by optical conductivity

H. Okamura*, T. Mizokawa, K. Miki, Y. Matsui, N. Noguchi, N. Katayama, H. Sawa, M. Nohara, Y. Lu, H. Takagi, Y. Ikemoto, T. Moriwaki 

Physical Review B 107 (2023) 045141.

　・Short-range order and increased transition temperature in LiVO2 with weakened trimer frustration

K. Kojima, N. Katayama*, Y. Matsuda, M. Shiomi, R. Ishii, H. Sawa

Physical Review B 107 (2023) L020101.

2022

　・Electrical-field-induced insulator-to-metal transition in samarium monosulfides

K. Kishida, J. Shibutani, T. Hatano, Y. Yokoyama, N. Katayama, Y. Okamoto, Y. Nakamura, H. Kishida, H.S. Suzuki, K. Takehana, Y. Imanaka, K. Takenaka* 

Applied Physics Letters 121 (2022) 121901.

　・Linear trimer molecule formation by three-center–four-electron bonding in a crystalline solid RuP

D. Hirai*, K. Kojima, N. Katayama, M. Kawamura, D. Nishio-Hamane, Z. Hiroi

Journal of the American Chemical Society 144 (2022) 17857-17864.

　・負熱膨張性微粒子の開発

竹中康司*， 岡本佳比古， 横山泰範， 片山尚幸， 門脇義史， 江藤昂樹， 渋谷隼矢， 加納雅人， 春日井涼太， 山田展也 

粉体および粉末冶金 69 (2022) 350-355.

　・Structural phase transition and negative thermal expansion in Cu1.8Zn0.2V2–xPxO7 solid solutions

K. Takenaka*, M. Kano, R. Kasugai, K. Takada, K. Eto, Y. Kadowaki, Y. Yokoyama, N. Katayama, Y. Okamoto 

Applied Physics Express 15 (2022) 025504.

　・Charge-ordered state satisfying the Anderson condition in LiRh2O4 arising from local dimer order

M. Shiomi, K. Kojima, N. Katayama*, S. Maeda, J. A. Schneeloch, S. Yamamoto, K. Sugimoto, Y. Ohta, D. Louca, Y. Okamoto, H. Sawa 

Physical Review B 105 (2022) L041103.

　・Do electron distributions with orbital degree of freedom exhibit anisotropy?

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, H. Sawa* 

Materials Advances 3 (2022) 3192-3198.

2021

　・Structural phase transition and giant negative thermal expansion in pyrophosphate Zn2–xMgxP2O7

Y. Kadowaki, R. Kasugai, Y. Yokoyama, N. Katayama, Y. Okamoto, K. Takenaka* 

Applied Physics Letters 119 (2021) 201906.

　・Giant negative thermal expansion of polycrystalline Ti2O3 induced by microstructural effects

Y. Kadowaki, R. Kasugai, Y. Yokoyama, N. Katayama, Y. Okamoto, K. Takenaka* 

Applied Physics Letters 119 (2021) 171901.

　・Hybridization-Gap Formation and Superconductivity in the Pressure-Induced Semimetallic Phase of the Excitonic Insulator Ta2NiSe5

K. Matsubayashi*, H. Okamura, T. Mizokawa, N. Katayama, A. Nakano, H. Sawa, T. Kaneko, T. Toriyama, T. Konishi, Y. Ohta, H. Arima, R. Yamanaka, A. Hisada, T. Okada, Y. Ikemoto, T. Moriwaki, K. Munakata, A. Nakao, M. Nohara, Y. Lu, H. Takagi, Y. Uwatoko 

Journal of the Physical Society of Japan 90 (2021) 074706. (Editors' Choice)

　・Detecting electron-phonon coupling during photoinduced phase transition

T. Suzuki*, Y. Shinohara, Y. Lu, M. Watanabe, J. Xu, K. L Ishikawa, H. Takagi, M. Nohara, N. Katayama, H. Sawa, M. Fujisawa, T. Kanai, J. Itatani, T. Mizokawa, S. Shin*, K. Okazaki* 

Physical Review B 103 (2021) L121105. (Editors' Suggestion)

　・Slow dynamics of disordered zigzag chain molecules in layered LiVS2 under electron irradiation

N. Katayama*, K. Kojima, T. Yamaguchi, S. Hattori, S. Tamura, K. Ohara, S. Kobayashi, K. Sugimoto, Y. Ohta, K. Saitoh, H. Sawa 

npj Quantum Materials 6 (2021) 16.

　・Ambient-pressure Dirac electron system in the quasi-two-dimensional molecular conductor 

S. Kitou*, T. Tsumuraya*, H. Sawahata, F. Ishii, K. Hiraki, T. Nakamura, N. Katayama, H. Sawa* 

Physical Review B 103 (2021) 035135.

2020

　・Photoinduced Phase Transition from Excitonic Insulator to Semimetal-like State in Ta2Ni1−xCoxSe5 (x = 0.10)

T. Mitsuoka, T. Suzuki, H. Takagi, N. Katayama, H. Sawa, M. Nohara, M. Watanabe, J. Xu, Q. Ren, M. Fujisawa, T. Kanai, J. Itatani, S. Shin, K. Okazaki, T. Mizokawa 

Journal of the Physical Society of Japan 89 (2020) 124703. (Open Select)

　・Annealing effects on negative thermal expansion properties of ball-milled β-Cu1.8Zn0.2V2O7 fine particles

V. Warne-Lang, M. Sato, M. Ozeki, Y. Kadowaki, Y. Yokoyama, N. Katayama, Y. Okamoto, K. Takenaka* 

Ceramics International 46 (2020) 27655-27659.

　・Successive Structural Transitions of CrSe2 with Anomalous Valent Chromium

S. Kobayashi, N. Katayama, H. Sawa

Nihon Kessho Gakkaishi 62 (2020) 221-222.

　・High-mobility carriers induced by chemical doping in the candidate nodal-line semimetal CaAgP

Y. Okamoto*, K. Saigusa, T. Wada, Y. Yamakawa, A. Yamakage, T. Sasagawa, N. Katayama, H. Takatsu, H. Kageyama, K. Takenaka 

Physical Review B 102 (2020) 115101.

　・Collapse of the simple localized 3d1 orbital picture in Mott insulator

S. Kitou*, T. Manjo, N. Katayama, T. Shishidou, T. Arima, Y. Taguchi, Y. Tokura, T. Nakamura, T. Yokoyama, K. Sugimoto, H. Sawa* 

Physical Review Research 2 (2020) 033503.

　・Robust atomic orbital in the cluster magnet LiMoO2

N. Katayama*, H. Takeda, T. Yamaguchi, Y. Yamada, K. Iida, M. Takigawa, Y. Ohta, H. Sawa 

Physical Review B 102 (2020) 081106(R).

　・Resistive anisotropy of candidate excitonic insulator Ta2NiSe5 under pressure

H. Arima, Y. Naito, K. Kudo, N. Katayama, H. Sawa, M. Nohara, Y.F. Lu, K. Kitagawa, H. Takagi, Y. Uwatoko, K. Matsubayashi 

Journal of Physics: Conference Series 1609 (2020) 012001.

・Sol–gel synthesis of doped Cu2V2O7 fine particles showing giant negative thermal expansion

M. Sato, V. Warne-Lang, Y. Kadowaki, N. Katayama, Y. Okamoto, K. Takenaka* 

AIP Advances 10 (2020) 075207.

　・Regular-triangle trimer and charge order preserving the Anderson condition in the pyrochlore structure of CsW2O6

Y. Okamoto*, H. Amano, N. Katayama, H. Sawa, K. Niki, R. Mitoka, H. Harima, T. Hasegawa, N. Ogita, Y. Tanaka, M. Takigawa, Y. Yokoyama, K. Takehana, Y. Imanaka, Y. Nakamura, H. Kishida, K. Takenaka 

Nature Communications 11 (2020) 3144.

　・Annealing effect on local structure and negative thermal expansion of antiperovskite manganese nitride fine particles

M. Ozeki, V. Warne-Lang, H. Tsukasaki, Y. Sakai, N. Katayama, Y. Okamoto, M. Azuma, S. Mori, K. Takenaka* 

Applied Physics Express 13 (2020) 075501.

　・Spray‐dry synthesis of β-Cu1.8Zn0.2V2O7 ceramic fine particles showing giant negative thermal expansion

K. Takenaka*, M. Sato, M. Mitamura, Y. Yokoyama, N. Katayama, Y. Okamoto

Journal of the American Ceramic Society 103 (2020) 2757-2763.

　・Intercalated ion dynamics in the two-dimensional layered compound Cu0.33TiSe2

S. Kitou*, T. Hasegawa, A. Nakano, N. Katayama, S. Tsutsui, H. Sawa

Physical Review B 101 (2020) 094108.

2019

　・Vanadium trimers randomly aligned along the c-axis direction in layered LiVO2

K. Kojima, N. Katayama*, S. Tamura, M. Shiomi, H. Sawa

Physical Review B 100 (2019) 235120.

　・Exciton Transport in the Electron–Hole System Ta2NiSe5

A. Nakano*, T. Nagai, N. Katayama, H. Sawa, H. Taniguchi, I. Terasaki

Journal of the Physical Society of Japan 88 (2019) 113706.

　・Two magnetization plateaus in the kagome fluoride Cs2LiTi3F12

R. Shirakami, H. Ueda, H. O. Jeschke, H. Nakano, S. Kobayashi, A. Matsuo, T. Sakai, N. Katayama, H. Sawa, K. Kindo, C. Michioka, K. Yoshimura 

Physical Review B 100 (2019) 174401.

　・Linear Trimer Formation with Antiferromagnetic Ordering in 1T-CrSe2 Originating from Peierls-like Instabilities and Interlayer Se–Se Interactions

S. Kobayashi*, N. Katayama, T. Manjo, H. Ueda, C. Michioka, J. Sugiyama, Y. Sassa, O. K. Forslund, M. Månsson, K. Yoshimura, H. Sawa 

Inorganic Chemistry 58 (2019) 14304-14315.

　・Valence fluctuations and giant isotropic negative thermal expansion in Sm1–xRxS (R= Y, La, Ce, Pr, Nd)

D. Asai, Y. Mizuno, H. Hasegawa, Y. Yokoyama, Y. Okamoto, N. Katayama, H.S. Suzuki, Y. Imanaka, K. Takenaka* 

Applied Physics Letters 114 (2019) 141902.

　・Effect of Cu intercalation and pressure on excitonic interaction in 1T-TiSe2

S. Kitou*, A. Nakano, S. Kobayashi, K. Sugawara, N. Katayama, N. Maejima, A. Machida, T. Watanuki, K. Ichimura, S. Tanda, T. Nakamura, H. Sawa* 

Physical Review B 99 (2019) 104109.

　・Honeycomb lattice type charge density wave associated with interlayer Cu ions ordering in 1T-CuxTiSe2

S. Kitou*, S. Kobayashi, T. Kaneko, N. Katayama, S. Yunoki, T. Nakamura,  H. Sawa* 

Physical Review B 99 (2019) 081111.

　・Quantum magnetisms in uniform triangular lattices Li2AMo3O8 (A = In, Sc)

K. Iida, H. Yoshida, H. Okabe, N. Katayama, Y. Ishii, A. Koda, Y. Inamura, N. Murai, M. Ishikado, R. Kadono, R. Kajimoto 

Scientific Reports 9 (2019) 1826.

　・Giant isotropic negative thermal expansion in Y-doped samarium monosulfides by intra-atomic charge transfer

K. Takenaka, D. Asai, R. Kaizu, Y. Mizuno, Y. Yokoyama, Y. Okamoto, N. Katayama, H. S. Suzuki, Y. Imanaka 

Scientific Reports 9 (2019) 122.

2018

　・Microstructural effects on negative thermal expansion extending over a wide temperature range in β-Cu1.8Zn0.2V2O7

N. Katayama*, K. Otsuka, M. Mitamura, Y. Yokoyama, Y. Okamoto, K. Takenaka

Applied Physics Letters 113 (2018) 181902.

　・Photo-induced semimetallic states realised in electron–hole coupled insulators

K. Okazaki, Y. Ogawa, T. Suzuki, T. Yamamoto, T. Someya, S. Michimae, M. Watanabe, Y. Lu, M. Nohara, H. Takagi, N. Katayama, H. Sawa, M. Fujisawa, T. Kanai, N. Ishii, J. Itatani, T. Mizokawa, S. Shin 

Nature communications 9 (2018) 4322.

　・Large entropy change derived from orbitally assisted three-centered two-electron  bond formation in metallic Li0.33VS2

N. Katayama*, S. Tamura, T. Yamaguchi, K. Sugimoto, K. Iida, T. Matsukawa, A. Hoshikawa, T. Ishigaki, S. Kobayashi, Y. Ohta, H. Sawa 

Physical Review B 98 (2018) 081104(R).

　・Extended operating temperature window of giant negative thermal expansion in Sn-doped Ca2RuO4

K. Takenaka*, N. Inoue, Y. Mizuno, Y. Okamoto, N. Katayama, Y. Sakai, T. Nishikubo, M. Azuma 

Applied Physics Letters 113 (2018) 071902.

　・Antiferroelectric distortion with anomalous phonon softening in the excitonic insulator Ta2NiSe5

A. Nakano, T. Hasegawa, S. Tamura, N. Katayama, S. Tsutsui, H. Sawa

Physical Review B 98 (2018) 045139.

　・In-plane spin canting and 1/3-magnetization-plateaulike behavior in S = 3/2 Cr3+ kagome lattice antiferromagnets Cs2KCr3F12 and Cs2NaCr3F12

M. Goto, H. Ueda, C. Michioka, A. Matsuo, K. Kindo, K. Sugawara, S. Kobayashi, N. Katayama, H. Sawa, K. Yoshimura 

Physical Review B 97 (2018) 224421.

　・Magnetic and structural properties of A-site ordered chromium spinel sulfides: alternating antiferromagnetic and ferromagnetic interactions in the breathing pyrochlore lattice

Y. Okamoto*, M. Mori, N. Katayama, A. Miyake, M. Tokunaga, A. Matsuo, K. Kindo, K. Takenaka 

Journal of the Physical Society of Japan 87 (2018) 034709.

　・Inhibition of the photoinduced structural phase transition in the excitonic insulator Ta2NiSe5

S. Mor, M. Herzog, J. Noack, N. Katayama, M. Nohara, H. Takagi, A. Trunschke, T. Mizokawa, C. Monney, J. Stähler 

Physical Review B 97 (2018) 115154.

　・Pressure-induced coherent sliding-layer transition in the excitonic insulator Ta2NiSe5

A. Nakano, K. Sugawara, S. Tamura, N. Katayama, K. Matsubayashi, T. Okada, Y. Uwatoko, K. Munakata, A. Nakao, H. Sagayama, R. Kumai, K. Sugimoto, N. Maejima, A. Machida, T. Watanuki, H. Sawa 

IUCrJ 5 (2018) 158-165.

　・Direct visualization of orbital flipping in volborthite by charge density analysis using detwinned data

K. Sugawara, K. Sugimoto, T. Fujii, T. Higuchi, N. Katayama, Y. Okamoto, H. Sawa

Journal of the Physical Society of Japan 87 (2018) 024601.

2017

　・Investigation of Honeycomb Lattice Consisting of Cu2(pymca)3 Moieties Using Synchrotron Radiation X-ray Structure Analysis

K. Sugawara, K. Sugimoto, N. Katayama, M. Hagiwara, Z. Honda, H. Sawa

Journal of the Physical Society of Japan 86 (2017) 123302.

　・Giant negative thermal expansion in Fe-doped layered ruthenate ceramics

K. Takenaka, T. Shinoda, N. Inoue, Y. Okamoto, N. Katayama, Y. Sakai, T. Nishikubo, M. Azuma 

Applied Physics Express 10 (2017) 115501.

　・Scaling of memories and crossover in glassy magnets

A.M. Samarakoon, M. Takahashi, D. Zhang, J. Yang, N. Katayama, R. Sinclair, H.D. Zhou, S.O. Diallo, G. Ehlers, D.A. Tennant, S. Wakimoto, K. Yamada, G.W. Chern, T.J. Sato, S.-H. Lee 

Scientific reports 7 (2017) 12053.

　・Ultrafast electronic band gap control in an excitonic insulator

S. Mor, M. Herzog, D. Golež, P. Werner, M. Eckstein, N. Katayama, M. Nohara, H. Takagi, T. Mizokawa, C. Monney, J. Stähler 

Physical Review Letters 119 (2017) 086401.

　・Successive Dimensional Transition in (TMTTF)2PF6 Revealed by Synchrotron X-ray Diffraction

S. Kitou, T. Fujii, T. Kawamoto, N. Katayama, S. Maki, E. Nishibori, K. Sugimoto, M. Takata, T. Nakamura, H. Sawa 

Physical Review Letters 119 (2017) 065701.

　・Ising-like anisotropy stabilized 1/3 and 2/3 magnetization plateaus in the V3+ kagome lattice antiferromagnets Cs2KCr3F12, Cs2NaCr3F12 and Rb2NaCr3F12

M. Goto, H. Ueda, C. Michioka, A. Matsuo, K. Kindo, K. Sugawara, S. Kobayashi, N. Katayama, H. Sawa, K. Yoshimura 

Physical Review B 95 (2017) 134436.

　・Various Arsenic Network Structures in 112-Type Ca1–xLaxFe1–yPdyAs2 Revealed by Synchrotron X-ray Diffraction Experiments

S. Tamura, N. Katayama*, Y. Yamada, Y. Sugiyama, K. Sugawara, H. Sawa

Inorganic Chemistry 56 (2017) 3030-3035.

　・Colossal negative thermal expansion in reduced layered ruthenate

K. Takenaka, Y. Okamoto, T. Shinoda, N. Katayama, Y. Sakai

Nature Communications 8 (2017) 14102.

2016

　・Iron arsenides with three-dimensional FeAs layer networks: Can(n+1)/2(Fe1−xPtx)(2+3n)Ptn(n−1)/2As(n+1)(n+2)/2 (n = 2, 3)

N. Katayama*, S. Onari, K. Matsubayashi, Y. Uwatoko, H. Sawa

Scientific Reports 6 (2016) 39280.

2015

　・Synchrotron X-ray diffraction study of 112-type Ca1-xLaxFeAs2

N. Katayama*, K. Sugawara, A. Nakano, S. Kitou, Y. Sugiyama, N. Kawaguchi, H. Ito, T. Higuchi, T. Fujii, H. Sawa 

Physica C: Superconductivity and its applications 518 (2015) 10-13.

　・Absence of Jahn−Teller transition in the hexagonal Ba3CuSb2O9 single crystal

N. Katayama*, K. Kimura, Y. Han, J. Nasu, N. Drichko, Y. Nakanishi, M. Halim, Y. Ishiguro, R. Satake, E. Nishibori, M. Yoshizawa, T. Nakano, Y. Nozue, Y. Wakabayashi, S. Ishihara, M. Hagiwara, H. Sawa, S. Nakatsuji 

Proceedings of the National Academy of Sciences 112 (2015) 9305-9309.

2014

　・Synchrotron X-ray Diffraction Study of Structural Phase Transition in Ca10(Ir4As8)(Fe2−xIrxAs2)5

N. Katayama*, K. Sugawara, Y. Sugiyama, T. Higuchi, K. Kudo, D. Mitsuoka, T. Mizokawa, M. Nohara, H. Sawa 

Journal of the Physical Society of Japan 83 (2014) 113707.

　・Excitonic Bose-Einstein condensation in Ta2NiSe5 above room temperature

K. Seki, Y. Wakisaka, T. Kaneko, T. Toriyama, T. Konishi, T. Sudayama, N. L. Saini, M. Arita, H. Namatame, M. Taniguchi, N. Katayama, M. Nohara, H. Takagi, T. Mizokawa, Y. Ohta 

Physical Review B 90 (2014) 155116.

　・Observation of quadrupole helix chirality and its domain structure in DyFe3(BO3)4

T. Usui, Y. Tanaka, H. Nakajima, M. Taguchi, A. Chainani, M. Oura, S. Shin, N. Katayama, H. Sawa, Y. Wakabayashi, T. Kimura 

Nature Materials 13 (2014) 611-618.

　・X-ray Photoemission and X-ray Absorption Spectroscopy of Hexagonal Ba3CuSb2O9

T. Sugimoto, T. Mizokawa, H. Wadati, K. Takubo, A. Damascelli, T. Z. Regier, G. A. Sawatzky, N. Katayama, H. Sawa, K. Kimura, S. Nakatsuji 

JPS Conf. Proc. 1 (2014) 012122. 

　・Electronic Structure of Quantum Spin-Liquid Coupound Ba3CuSb2O9

T. Sugimoto, T. Mizokawa, H. Wadati, K. Takubo, A. Damascelli, T. Z. Regier, G. A. Sawatzky, N. Katayama, H. Sawa, K. Kimura, S. Nakatsuji 

JPS Conf. Proc. 1 (2014) 012122. 

2013

　・Superconductivity in Ca1-xLaxFeAs2: A Novel 112-Type Iron Pnictide with Arsenic Zigzag Bonds

N. Katayama*, K. Kudo, S. Onari, T. Mizukami, K. Sugawara, Y. Sugiyama, Y. Kitahama, K. Iba, K. Fujimura, N. Nishimoto, M. Nohara, H. Sawa 

Journal of the Physical Society of Japan 82 (2013) 123702. (Open Select, JPSJ Most Cited Articles in 2014, 日本物理学会第26回論文賞 2021)

　・Superconductivity in Ca10(Ir4As8)(Fe2As2)5 with square-planar coordination of iridium

K. Kudo, D. Mitsuoka, M. Takasuga, Y. Sugiyama, K. Sugawara, N. Katayama, H. Sawa, H. S. Kubo, K. Takamori, M. Ichioka, T. Fujii, T. Mizokawa, M. Nohara 

Scientific Reports 3 (2013) 1-5.

2012

　・Photoemission Spectroscopy of Ta2NiSe5

Y. Wakisaka, T. Sudayama, K. Takubo, T. Mizokawa, N.L. Saini, M. Arita, H. Namatame, M. Taniguchi, N. Katayama, M. Nohara, H. Takagi 

Journal of superconductivity and novel magnetism 25 (2012) 1231-1234.

　・Conductivity and incommensurate antiferromagnetism of Fe1.02Se0.10Te0.90 under pressure

N. Katayama*, K. Matsubayashi, Y. Nomura, S. Ji, J. Leao, M.A. Green, T.J. Sato, Y. Uwatoko, M. Fujita, K. Yamada, R. Arita, S.-H. Lee 

Europhysics Letters 98 (2012) 37002.　

　・Spin-orbital short-range order on a honeycomb-based lattice

S. Nakatsuji*, K. Kuga, K. Kimura, R. Satake, N. Katayama, E. Nishibori, H. Sawa, R. Ishii, M. Hagiwara, F. Bridges, T.U. Ito, W. Higemoto, Y. Karaki, M. Halim, A.A. Nugroho, J.A. Rodriguez-Rivera, M.A. Green, C. Broholm 

Science 336 (2012) 559-563.

2011

　・NMR study of magnetic excitation in LiVX2 (X= O, S)

Y. Kawasaki, Y. Kishimoto, T. Tanaka, T. Ohno, S. Niitaka, N. Katayama, H. Takagi

Journal of Physics: Conference Series 320 (2011) 012028.

　・Inelastic neutron scattering study of the magnetic fluctuations in Sr2RuO4

K. Iida, M. Kofu, N. Katayama, J. Lee, R. Kajimoto, Y. Inamura, M. Nakamura, M. Arai, Y. Yoshida, M. Fujita, K. Yamada, S.-H. Lee 

Physical Review B—Condensed Matter and Materials Physics 84 (2011) 060402.

　・Pressure-induced changes in the magnetic and valence state of EuFe2As2

K. Matsubayashi, K. Munakata, M. Isobe, N. Katayama, K. Ohgushi, Y. Ueda, N. Kawamura, M. Mizumaki, N. Ishimatsu, M. Hedo, I. Umehara, Y. Uwatoko 

Physical Review B—Condensed Matter and Materials Physics 84 (2011) 024502.

2010

・Investigation of the Spin-Glass Regime between the Antiferromagnetic and Superconducting Phases in Fe1+ySexTe1-x

N. Katayama*, S. Ji, D. Louca, S. Lee, M. Fujita, T. J. Sato, J. Wen, Z. Xu, G. Gu, G. Xu, Z. Lin, M. Enoki, S. Chang, K. Yamada, J. M. Tranquada 

Journal of the Physical Society of Japan 79 (2010) 113702.

・Absence of nesting in the charge-density-wave system  as seen by photoelectron spectroscopy

M. Mulazzi, A. Chainani, N. Katayama, R. Eguchi, M. Matsunami, H. Ohashi, Y. Senba, M. Nohara, M. Uchida, H. Takagi, S. Shin 

Physical Review B—Condensed Matter and Materials Physics 82 (2010) 075130.

・High-Field Studies on Single Crystals of EuFe2As2

M. Tokunaga, I. Katakura, N. Katayama, K. Ohgushi

Journal of Low Temperature Physics 159 (2010) 601-605.

・Coupling of spin and orbital excitations in the iron-based superconductor FeSe0.5Te0.5

S.H. Lee, G. Xu, W. Ku, J.S. Wen, C.C. Lee, N. Katayama, Z.J. Xu, S. Ji, Z.W. Lin, G.D. Gu, H.-B. Yang, P. D. Johnson, Z.-H. Pan, T. Valla, M. Fujita, T.J. Sato, S. Chang, K. Yamada, J. M. Tranquada 

Physical Review B—Condensed Matter and Materials Physics 81 (2010) 220502.

・Local atomic structure of superconducting FeSe1-xTex

D. Louca*, K. Horigane, A. Llobet, R. Arita, S. Ji, N. Katayama, S. Konbu, K. Nakamura, T.-Y. Koo, P. Tong, K. Yamada 

Physical Review B—Condensed Matter and Materials Physics 81 (2010) 134524.

・High-pressure ac specific heat technique with cubic anvil apparatus

K. Matsubayashi, M. Hedo, I. Umehara, N. Katayama, K. Ohgushi, A. Yamada, K. Munakata, T. Matsumoto, Y. Uwatoko 

Journal of Physics: Conference Series 215 (2010) 012187.

・Orbital-Dependent Modifications of Electronic Structure across the Magnetostructural Transition in BaFe2As2

T. Shimojima, K. Ishizaka, Y. Ishida, N. Katayama, K. Ohgushi, T. Kiss, M. Okawa, T. Togashi, X.-Y. Wang, C.-T. Chen, S. Watanabe, R. Kadota, T. Oguchi, A. Chainani, S. Shin 

Physical Review Letters 104 (2010) 057002.

2009

・Spontaneous Formation of a Superconducting and Antiferromagnetic Hybrid State in SrFe2As2 under High Pressure

K. Kitagawa, N. Katayama, H. Gotou, T. Yagi, K. Ohgushi, T. Matsumoto, Y. Uwatoko, M. Takigawa 

Physical Review Letters 103 (2009) 257002.

・Variation in Electronic State of Ba(Fe1-xCox)2As2 Alloy as Investigated in Terms of Transport Properties

N. Katayama, Y. Kiuchi, Y. Matsushita, K. Ohgushi

Journal of the Physical Society of Japan 78 (2009) 123702.

・Anomalous Metallic State in the Vicinity of Metal to Valence-Bond Solid Insulator Transition in LiVS2

N. Katayama*, M. Uchida, D. Hashizume, S. Niitaka, J. Matsuno, D. Matsumura, Y. Nishihata, J. Mizuki, N. Takeshita, A. Gauzzi, M. Nohara, H. Takagi 

Physical Review Letters 103 (2009) 146405.

・Excitonic Insulator State in Ta2NiSe5 Probed by Photoemission Spectroscopy

Y. Wakisaka, T. Sudayama, K. Takubo, T. Mizokawa, M. Arita, H. Namatame, M. Taniguchi, N. Katayama, M. Nohara, H. Takagi 

Physical Review Letters 103 (2009) 026402.

・Intrinsic Properties of AFe2As2 (A = Ba, Sr) Single Crystal under Highly Hydrostatic Pressure Conditions

K. Matsubayashi, N. Katayama, K. Ohgushi, A. Yamada, K. Munakata, T. Matsumoto, Y. Uwatoko 

Journal of the Physical Society of Japan 78 (2009) 073706. (JPSJ Most Cited Articles in 2009)

・Antiferromagnetism of SrFe2As2 Studied by Single-Crystal 75As-NMR

K. Kitagawa, N. Katayama, K. Ohgushi, M. Takigawa

Journal of the Physical Society of Japan 78 (2009) 063706.

・Trimer V3+ Spin Singlet State and Pseudo Gap in LiVS2 Studied by 51V and 7Li Nuclear Magnetic Resonance

T. Tanaka, Y. Kawasaki, S. Endou, S. Kimura, Y. Ideta, Y. Kishimoto, T. Ohno, N. Katayama, M. Nohara, H. Takagi 

Journal of the Physical Society of Japan 78 (2009) 054709.

2008

・7Li-and 51V-NMR study of LiVS2

T. Tanaka, Y. Kawasaki, Y. Takagishi, Y. Ideta, Y. Kishimoto, T. Ohno, N. Katayama, M. Nohara, H. Takagi 

Journal of Physics and Chemistry of Solids 69 (2008) 3142-3145.

・Commensurate itinerant antiferromagnetism in BaFe2As2: 75As-NMR studies on a self-flux grown single crystal

K. Kitagawa, N. Katayama, K. Ohgushi, M. Yoshida, M. Takigawa

Journal of the Physical Society of Japan 77 (2008) 114709. (JPSJ Most Cited Articles in 2008, 日本物理学会第24回論文賞 2019)

2006

・Watery superconductivity in misfit-layer sulfides

N. Katayama, M. Nohara, H. Takagi

Physica C: Superconductivity and its applications 445 (2006) 35-38.

2005

・Enhanced superconducting transition temperature in the water-intercalated sulfides

N. Katayama, M. Nohara, F. Sakai, H. Takagi

Journal of the Physical Society of Japan 74 (2005) 851-854.

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