2007/10/16 by T. Sasaki, Takahiko Sasaki, Hajime Oizumi +7 · 3 citations
Engineering · Materials Science · Physics and Astronomy · #Magnetism in coordination complexes #Organic Light-Emitting Diodes Research #Organic and Molecular Conductors Research #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1143/jpsj.76.123701
published as J. Phys. Soc. Jpn. 76, 123701 (2007) · 4 pages, 3 figures
arxiv created 2007/10/16 · openalex publication_date 2007/11/26 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We report X-ray irradiation-induced carrier doping effects on the electrical conductivity in the organic dimer-Mott insulators κ-(ET)2X with X = Cu[N(CN)2]Cl and Cu2(CN)3. For κ-(ET)2Cu[N(CN)2]Cl, we have observed a large decrease of the resistivity by 40 % with the irradiation at 300 K and the metal-like temperature dependence down to about 50 K. The irradiation-induced defects expected at the donor molecule sites might cause a local imbalance of the charge transfer in the crystal. Such molecular defects result in the effective doping of carriers into the half-filled dimer-Mott insulators.