Electronic Griffiths Phase in Disordered Mott-Transition Systems

Riku Yamamoto, Tetsuya Furukawa, Kazuya Miyagawa, Takahiko Sasaki, Kazushi Kanoda, Tetsuaki Itou

研究成果: Article査読

10 被引用数 (Scopus)


Solid-state physics and soft-matter physics have been developed independently, with little mutual exchange of the underlying physical concepts. However, after many studies of correlated electron systems, it has been recognized that correlated electrons (especially in Mott-transition systems) in solid matter sometimes show behavior similar to "structured fluids" in soft matter; that is, the electrons exhibit long-length self-organization (but without long-range order) and slow dynamics, which is inevitable for the long-length structures. The essential question is this: what condition causes such behavior in solid matter? We focused on an organic Mott-transition system and demonstrated that the electrons of this system fluctuate very slowly only when the following two factors are met simultaneously: (i) the electronic system is on the metal and Mott-insulator boundary and (ii) the system is subject to quenched disorder. This electronic state with slow dynamics under this condition can be explained by the concept of the "(electronic) Griffiths phase." This concept will potentially be a key in connecting solid-state physics with soft-matter physics.

ジャーナルPhysical review letters
出版ステータスPublished - 2020 1月 31

ASJC Scopus subject areas

  • 物理学および天文学(全般)


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