Superconducting dome underlying bipolaronic insulating state in charge-doped Ti4O7epitaxial films

Takuto Soma, Tomohiro Kobayashi, Kohei Yoshimatsu, Akira Ohtomo

研究成果: Article査読

抄録

The bipolaronic insulating (BI) state can cause the emergent superconducting phase when the strength of electron- phonon interaction is deliberately reduced. In this report, we have investigated electronic phase diagram of the wellknown BI compound Ti4O7 by analyzing the transport properties of over 40 epitaxial-film samples. The diagram captures the systematic suppression of the BI state with increasing the number of doped electrons and a superconducting dome located under the BI state. The coexistence of the BI and superconducting states suggests the bipolaronic superconductivity in Ti4O7 epitaxial films.

本文言語English
論文番号023705
ジャーナルjournal of the physical society of japan
90
2
DOI
出版ステータスPublished - 2021 2 15

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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