STRUCTURE AND ELECTRONIC-PROPERTIES OF CS3C60 UNDER AMBIENT-PRESSURE REVEALED BY X-RAY-DIFFRACTION AND ESR

The structure and electronic properties of Cs3C60 under ambient pressu re were studied by X-ray diffraction (XRD) and ESR. The XRD showed tha t Cs3C60 takes a body-centered orthorhombic structure as the main phas e. No clear structural change was observed down to 9 K. The temperatur e dependence of the ESR peak suggested that Cs3C60 exhibits a metallic behavior but no metal-insulator transition down to 1.9 K, contrary to a previous prediction. (C) 1998 Elsevier Science B.V. All rights rese rved.