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Publications (2019~2023年)

東北大学講師/准教授時代
2023年
76. D. Shiga, X. Cheng, T. T. Kim, T. Kanda, N. Hasegawa, M. Kitamura, K. Yoshimatsu, and H. Kumigashira, "Electronic phase diagram of Cr-doped VO2 epitaxial films studied by in situ photoemission spectroscopy" Phys. Rev. B 108, 045112 (2023).
DOI: 10.1103/PhysRevB.108.045112

75. T. Kanda, D. Shiga, A. Wada, R. Hayasaka, Y. Masutake, N. Hasegawa, M. Kitamura, K. Yoshimatsu, and H. Kumigashira, "Quantization condition of strongly correlated electrons in oxide nanostructures" Commun. Mater. 4, 27 (2023). 
DOI: 10.1038/s43246-023-00354-7
 
74. 吉松 公平、”パルスレーザ堆積法によるλ相Ti3O5薄膜の合成 –薄膜による準安定相図の安定化” レーザ加工学会誌 Vol. 30, No. 1, pp. 42–45 (2023).
2022年
73. K. Yoshimatsu, S. Miyazaki, N. Hasegawa, and H. Kumigashira, “Evidence of lattice deformation induced metal-insulator transition in Ti2O3” Phys. Rev. B 106, L081110 (2022).
DOI: 10.1103/PhysRevB.106.L081110

72. N. Hasegawa, K. Yoshimatsu, D. Shiga, T. Kanda, S. Miyazaki, M. Kitamura, and K. Horiba, and H. Kumigashira, “Direct observation of band structure for Ti2O3 thin films by soft X-ray angle resolved photoemission spectroscopy” Phys. Rev. B 105, 235137 (2022). 
DOI: 10.1103/PhysRevB.105.235137
 
71. M. Kitamura, S. Souma, A. Honma, D. Wakabayashi, H. Tanaka, A. Toyoshima, K. Amemiya, T. Kawakami, K. Sugawara, K. Nakayama, K. Yoshimatsu, H. Kumigashira, T. Sato, and K. Horiba, "Development of a versatile micro-focused angle-resolved photoemission spectroscopy system with Kirkpatrick-Baez mirror optics" Rev. Sci. Instr. 93, 033906 (2022). 
DOI: 10.1063/5.0074393
70. T. Soma, K. Yoshimatsu, K. Horiba, H. Kumigashira, and A. Ohtomo, “Two-dimensional superconductivity in single-band correlated 2H-type NbO2 layers” Phys. Rev. B 105, 104504 (2022).
DOI: 10.1103/PhysRevB.105.104504

69. K. Yoshimatsu and H. Kumigashira, “Direct synthesis of metastable λ-phase Ti3O5 film on LaAlO3 (110) substrates under high temperatures” Cryst. Growth Des. 22, 703 (2022). 
DOI: 10.1021/acs.cgd.1c01214
68. A. Ohtomo, T. Soma, and K. Yoshimatsu, “Electrochemical modulation of electronic states in strongly correlated transition-metal oxides” JSAP Review 220202 (2022).
DOI: 10.11470/jsaprev.220202

67. 吉松 公平、”新しい準安定酸化チタンλ相Ti3O5 〜多彩な相転移と薄膜合成〜” 光技術コンタクト Vol. 60, No. 5 pp12–20 (2022).

66. 吉松 公平、”新しい準安定酸化チタン 多彩な機能と合成法” 化学と工業 (4月号) Vol. 75-4, pp264-265 (2022).
2021年
65. T. Yajima, T. Soma, K. Yoshimatsu, and A. Ohtomo, “Heavy-fermion metallic state and Mott transition induced by Li-ion intercalation in LiV2O4 epitaxial films” Phys. Rev. B 104, 245104 (2021).
DOI: 10.1103/PhysRevB.104.245104

64. R. Yukawa, M. Kobayashi, T. Kanda, D. Shiga, K. Yoshimatsu, S. Ishibashi, M. Minohara, M. Kitamura, K. Horiba, A. F. Santander-Syro, and H. Kumigashira, “Resonant tunneling driven metal-insulator transition in double quantum-well structures of strongly correlated oxide” Nature Commun. 12, 7070 (2021).
DOI: 10.1038/s41467-021-27327-z

63. T. Kanda, D. Shiga, R. Yukawa, N. Hasegawa, D. K. Nguyen, X. Cheng, R. Tokunaga, M. Kitamura, K. Horiba, K. Yoshimatsu, and H. Kumigashira, “Electronic structure of SrTi1–xVxO3 films studied by in situ photoemission spectroscopy: Screening for a transparent electrode material” Phys. Rev. B 104, 115121 (2021).
DOI: 10.1103/PhysRevB.104.115121
62. R. Wakabayashi, K. Yoshimatsu, M. Hattori, J. –S. Lee, O. Sakata, and A. Ohtomo*, “Epitaxial stabilization of complete solid-solution β-(AlxGa1–x)2O3 (100) films by pulsed-laser deposition” Cryst. Growth Des. 21, 2844 (2021). 
DOI: 10.1021/acs.cgd.1c00030

61. T. Soma, T. Kobayashi, K. Yoshimatsu, and A. Ohtomo, “Superconducting dome underlying bipolaronic insulating state in charge-doped Ti4O7 epitaxial films” J. Phys. Soc. Jpn. 90, 023705 (2021). 
DOI: 10.7566/JPSJ.90.023705
2020年

60. K. Yoshimatsu, N. Hasegawa, Y. Nambu, Y. Ishii, Y. Wakabayashi, and H. Kumigashira, “Metallic ground states of undoped Ti2O3 films induced by elongated c-axis lattice constant” Sci. Rep. 10, 22109 (2020).

DOI: 10.1038/s41598-020-79182-5

59. D. Shiga, B. E. Yang, N. Hasegawa, T. Kanda, R. Tokunaga, K. Yoshimatsu, R. Yukawa, M. Kitamura, K. Horiba, and H. Kumigashira, “Thickness dependence of electronic and crystal structures in VO2 ultrathin films: suppression of the collaborative Mott-Peierls transition” Phys. Rev. B 102, 115114 (2020).  Editors suggestions

DOI: 10.1103/PhysRevB.102.115114

58. T. Soma, K. Yoshimatsu, and A. Ohtomo, “P-type transparent superconductivity in two-dimensional Li1-xNbO2 with strongly correlated electrons at isolated d band” Science Advances 6, eabb8570 (2020).

DOI: 10.1126/sciadv.abb8570

57. J. Mizushiro, K. Yoshimatsu, N. Ohashi, M. Tanaka, O. Sakata, and A. Ohtomo, “Optical and structural investigations on titanium oxynitride films for visible-UV photocatalytic applications” J. Appl. Phys. 127, 135301 (2020). 

DOI: 10.1063/1.5143609

56. G. Shibata, K. Yoshimatsu, E. Sakai, K. Ishigami, S. Sakamoto, Y. Nonaka, F. –H. Chang, H. –J. Lin, D. –J. Huang, C. –T. Chen, H. Kumigashira, and A. Fujimori, “Temperature evolution of magnetic phases near the thickness-dependent metal-insulator transition in La1−xSrxMnO3 thin films observed by XMCD” J. Phys. Conf. Proc. 30, 011072 (2020). 

DOI: 10.7566/JPSCP.30.011072

2019年

55. K. Yoshimatsu, J. Ishimaru, K. Watarai, K. Yamamoto, Y. Hirata, H. Wadati, Y. Takeda, K. Horiba, H. Kumigashira, O. Sakata, and A. Ohtomo, “Magnetic and electronic properties of B-site-ordered double-perovskite oxide La2CrMnO6 thin films” Phys. Rev. B. 99, 235129 (2019).  DOI:10.1103/PhysRevB.99.235129

54. S. Sekiguchi, T. Shiraishi, K. Miura, C. Kawashima, K. Yoshimatsu, A. Ohtomo, H. Kamioka, and H. Takahashi, “High-pressure study for superconductivity in Ti4O7 film” J. Phys. Soc. Jpn. 88, 035001 (2019).   DOI: 10.7566/JPSJ.88.035001

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