Study on hierarchical charge-spin-lattice dynamics of strongly correlated electrons in molecular conductors

2016 Fiscal Year Final Research Report

• Project/Area Number: 25287080
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Condensed matter physics II
• Research Institution: Tohoku University
• Principal Investigator: Sasaki Takahiko 東北大学, 金属材料研究所, 教授 (20241565)
• Co-Investigator(Kenkyū-buntansha): 橋本 顕一郎 東北大学, 金属材料研究所, 助教 (00634982) ; 松浦 直人 一般財団法人総合科学研究機構(総合科学研究センター(総合科学研究室)及び中性子科, 東海事業センター, 副主任研究員 (30376652) ; 井口 敏 東北大学, 金属材料研究所, 准教授 (50431789) ; 河村 聖子 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 J-PARCセンター, 任期付研究員 (70360518) ; 米山 直樹 山梨大学, 総合研究部, 准教授 (80312643)
• Research Collaborator: TANIGUCHI Hiromi ; ISHIHARA Sumio ; LANG Michael ; MÜLLER Jens
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: 強相関電子系 / 分子性有機導体 / 電荷ガラス

Outline of Final Research Achievements

In this research, we investigated the characteristic non-linear electronic properties appearing in the strongly correlated electrons coupled with soft molecular lattice system in organic conductors possessing characteristic charge-spin-lattice multiple-degrees of freedom. We found that the novel charge-glass state existed around the charge-order insulating transition (electrons solid-liquid transition) in a molecular conductor. This charge glass state is the third electronic state, in addition to the electrons solid (insulator) and electrons liquid (metal), which indicates heterogeneously quenched solidification of electrons with quite slow time-scale of the electronic dynamics.

Free Research Field

低温物性実験