Determination of the hyperfine coupling tensor in organic conductors kappa-(BEDT-TTF)(2)X (X=Cu[N(CN)(2)]Br, Cu(NCS)(2)) on central C-13 sites

作者：Saito Y; Kawamoto A^*

来源：Solid State Nuclear Magnetic Resonance, 2016, 73: 22-30.

DOI：10.1016/j.ssnmr.2015.12.001

• Organic conductor
• C-13 NMR
• Electron correlation
• Hyperfine coupling tensor

Although the organic superconductors kappa-(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 kappa-salts. The tensors of kappa-(BEDT-TTF)(2X) and beta' -(BEDT-TTF)(2)ICl2 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.

• 出版日期2016-2