High-pressure study of superconductivity in Ti4O7 Film

Shuhei Sekiguchi, Takuya Shiraishi, Kyota Miura, Chizuru Kawashima, Kohei Yoshimatsu, Akira Ohtomo, Hayato Kamioka, Hiroki Takahashi

Research output: Contribution to journalArticle


Measurements of electrical resistance at high pressure were performed up to 2.5 GPa for the insulating and the superconducting epitaxial Ti4O7 films of Magnéli phase. For the insulating film, the metal-insulator transition temperature increased significantly from ∼150 to 180 K at a pressure of 2 GPa. For the superconducting film, Tc decreased at a rate of 0.7 K=GPa. It is believed that the electron–phonon interaction is sensitive to strains under pressure and plays an important role.

Original languageEnglish
Journaljournal of the physical society of japan
Issue number3
Publication statusPublished - 2019 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Sekiguchi, S., Shiraishi, T., Miura, K., Kawashima, C., Yoshimatsu, K., Ohtomo, A., Kamioka, H., & Takahashi, H. (2019). High-pressure study of superconductivity in Ti4O7 Film. journal of the physical society of japan, 88(3). https://doi.org/10.7566/JPSJ.88.035001