16. Superconductivity in Ternary Zirconium Telluride Zr6RuTe2

K. Yuchi, H. Matsumoto, D. Nishio-Hamane, K. Moriyama, K. Kojima, R. Okuma, J. Yamaura, and Y. Okamoto

J. Phys. Soc. Jpn. 94, 085001 (2025).

15. Reexamination of the charge-ordered dimer pattern in the spinel compound CuIr2S4 using single-crystal synchrotron x-ray diffraction

T. Ohashi, N. Katayama, K. Kojima, M. Emi, C. Koyama, T. Hara, K. Hashimoto, S. Kitani, H. Kawaji, H. S. Suzuki, S. Nagata, K. Sugimoto, K. Iida, and H. Sawa

Phys. Rev. B 111, 224114 (2025).

14. Cubic ReSTe as a High-Performance Thermoelectric Material

H. Matsumoto, H. Isomura, K. Kojima, R. Okuma, H. Ohshima, C.-H. Lee, Y. Yamakawa, and Y. Okamoto

Appl. Phys. Lett. 126, 243903 (2025).

13. Topological electronic structure and transport properties of the distorted rutile-type WO2

Y. Muramatsu, D. Hirai, M. Kawamura, S. Minami, Y. Ikeda, T. Shimada, K. Kojima, N. Katayama, and K. Takenaka 

APL Mater. 13, 011119 (2025).

12. Superconductivity in Hexagonal Zr6CoAl2-Type Zr6RuBi2 and Zr6FeBi2

K. Yuchi, D. Nishio-Hamane, K. Kojima , K. Moriyama, R. Okuma, and Y. Okamoto

J. Phys. Soc. Jpn. 94, 013701 (2025).

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

N. Katayama, and K. Kojima

J. Phys. Soc. Jpn. 93, 111004 (2024). (special topics)

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

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

Phys. Rev. B 110, L020103 (2024).

9. 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, and K. Takenaka

Phys. Rev. Mater. 8, 055001 (2024).

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

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

Phys. Rev. B 109, 104115 (2024).

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

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

Phys. Rev. B 108, 094107 (2023).

6. 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, and H. Sawa

Phys. Rev. B 107, 245113 (2023).

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

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

Phys. Rev. B 107, L020101 (2023).

4. 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, and Z. Hiroi

J. Am. Chem. Soc. 144, 17857 (2022).

Press Release (Japanese Only): Nagoya Univ.

3. 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, and H. Sawa

Phys. Rev. B 105, L041103 (2022).

2. 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, and H. Sawa

npj Quantum Mater. 6, 16 (2021). (Open access)

Press Release (Japanese Only): Nagoya Univ., SPring-8

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

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

Phys. Rev. B 100, 235120 (2019).