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Electrical inhomogeneity at the mott transition in the band width controlled κ-(BEDT-TTF)2Cu[N(CN)2Br |
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| Authors: | T. Sasaki N. Yoneyama A. Suzuki I. Ito N. Kobayashi Y. Ikemoto H. Kimura N. Hanasaki H. Tajima |
| Affiliation: | (1) Institute for Materials Research, Tohoku University, 980-8577 Sendai, Japan;(2) SPring-8, Japan Synchrotron Radiation Research Institute, 679-5198 Hyogo, Japan;(3) Institute for Solid State Physics, University of Tokyo, 277-8581 Kashiwa, Japan |
| Abstract: | The electronic phase separation on macroscopic scale is studied in the organic Mott system κ-(BEDT-TTF)2Cu[N(CN)2]Br by means of scanning micro-region infrared spectroscopy using the synchrotron radiation. The phase separation appears in the vicinity of the Mott boundary in the single crystals of which the band width is controlled by partly substituting the BEDT-TTF molecule with the deuterated one. The transport properties under the phase separation are considered to be influenced by the percolation process of the domains. |
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