Monomer Mott Insulator (BEDT-TTF)Cu[N(CN)2]2 as a Potential Nodal Line System

Naoki Yoneyama, Muhammad Khalish Nuryadin, Takao Tsumuraya, Satoshi Iguchi, Takahiro Takei, Nobuhiro Kumada, Masanori Nagao, Isao Tanaka, Takahiko Sasaki

Research output: Contribution to journalArticlepeer-review


We report the band structure calculations and experimental results for the resistivity and magnetic susceptibility in a spin-1=2 (BEDT-TTF)•+ monomer Mott insulator (BEDT-TTF)Cu[N(CN)2]2. The band calculations indicate a Dirac semimetal state with nodal lines at the Fermi level. The resistivity and magnetic susceptibility as functions of temperature were well interpreted in terms of the monomer Mott insulating state instead of the expected semimetal state, probably because of the strong electron correlation. In addition, we observed an Arrhenius-type steep reduction in the paramagnetic susceptibility below approximately 25 K, which indicates a spin-singlet ground state.

Original languageEnglish
Article number113704
Journaljournal of the physical society of japan
Issue number11
Publication statusPublished - 2022 Nov 15

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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