Saito Y, Kawamoto A
Department of Physics, Hokkaido University, Sapporo 060-0810, Japan.
Solid State Nucl Magn Reson. 2016 Feb;73:22-30. doi: 10.1016/j.ssnmr.2015.12.001. Epub 2015 Dec 30.
Although the organic superconductors κ-(BEDT-TTF)2X (X=Cu[N(CN)2]Br and Cu(NCS)2) have been studied by NMR spectroscopy, hyperfine coupling tensors are required to quantify NMR spectra. Angle dependences of NMR spectra were measured to determine hyperfine coupling tensors applicable to further NMR assessments of attractive physical phenomena on κ-salts. The tensors of κ-(BEDT-TTF)2X and β(')-(BEDT-TTF)2ICl2 salts were compared to determine the hyperfine coupling mechanism in organic metals, with the results indicating that off-site dimer contribution should be considered. We also report the electron correlation of these salts and further application of the tensors.
尽管有机超导体κ-(BEDT-TTF)2X（X = Cu[N(CN)2]Br和Cu(NCS)2）已通过核磁共振光谱进行了研究，但需要超精细耦合张量来量化核磁共振光谱。测量了核磁共振光谱的角度依赖性，以确定适用于进一步对κ盐上有吸引力的物理现象进行核磁共振评估的超精细耦合张量。比较了κ-(BEDT-TTF)2X和β(')-(BEDT-TTF)2ICl2盐的张量，以确定有机金属中的超精细耦合机制，结果表明应考虑非原位二聚体贡献。我们还报告了这些盐的电子相关性以及张量的进一步应用。
