Abstract
Electronic phase separation consisting of the metallic and insulating domains with in diameter is found in the organic Mott system by means of scanning microregion infrared spectroscopy using the synchrotron radiation. The phase separation appears below the critical end temperature 35–40 K of the first-order Mott transition. The observation of the macroscopic size of the domains indicates a different class of the intrinsic electronic inhomogeneity from the nanoscale one reported in the inorganic Mott systems such as high- copper and manganese oxides.
- Received 4 February 2004
DOI:https://doi.org/10.1103/PhysRevLett.92.227001
©2004 American Physical Society