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


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.

ジャーナルjournal of the physical society of japan
出版ステータスPublished - 2021 2 15

ASJC Scopus subject areas

  • Physics and Astronomy(all)

フィンガープリント 「Superconducting dome underlying bipolaronic insulating state in charge-doped Ti<sub>4</sub>O<sub>7</sub>epitaxial films」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。