High-pressure study of superconductivity in Ti4O7 Film

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

doi:10.7566/JPSJ.88.035001

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 journal › Article

Abstract

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, T_c 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 language	English
Journal	journal of the physical society of japan
Volume	88
Issue number	3
DOIs	https://doi.org/10.7566/JPSJ.88.035001
Publication status	Published - 2019 Jan 1
Externally published	Yes

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

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AU - Yoshimatsu, Kohei

AU - Ohtomo, Akira

AU - Kamioka, Hayato

AU - Takahashi, Hiroki

PY - 2019/1/1

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