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Molecular motion and high-temperature paramagnetic phase in kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Cl

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Title: Molecular motion and high-temperature paramagnetic phase in kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Cl
Authors: Matsumoto, Miko Browse this author
Saito, Yohei Browse this author
Kawamoto, Atsushi Browse this author →KAKEN DB
Issue Date: 15-Sep-2014
Publisher: American Physical Society
Journal Title: Physical Review B
Volume: 90
Issue: 11
Start Page: 115126
Publisher DOI: 10.1103/PhysRevB.90.115126
Abstract: The organic conductor kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Cl has been studied for the examination of the conducting mechanism of the semiconducting behavior at high temperatures by C-13-NMR spectroscopy. We found that the temperature dependence of the linewidths and the spin-spin relaxation rate T-2(-1) showed a peak structure characterized by the hyperfine coupling constant in this region, suggesting a connection between ethylene motion and conducting electrons similar to that observed in kappa-(BEDT-TTF)(2)Cu(NCS)(2). Although kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Cl salt was thought to be an insulator at high temperature, our findings suggest that all kappa-type salts at high temperatures could be in the same phase where the scattering caused by ethylene motion is added to bad metal.
Rights: ©2014 American Physical Society
Type: article
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 河本 充司

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