Evidence for distinct polymer chain orientations in KC60 and RbC60

Abstract

The KC60 and RbC60 polymer phases exhibit contrasting electronic properties while powder diffraction studies have revealed no definite structural difference. We have performed single crystal X-ray diffraction and diffuse scattering studies of these compounds. It is found that KC60 and RbC60 possess different chain orientations about their axes, which are described by distinct space groups Pmnn and I2/m, respectively. Such a structural difference will be of great importance to a complete understanding of the physical properties.

To be published in Phys. Rev. Lett

Cited by in corpus (5)

• Evidence of a structural anomaly at 14 K in polymerised CsC60
• Ab initio study of charge doping effect on 1D polymerization of C60
• Theory of Distinct Crystal Structures of Polymerized Fullerides AC60, A=K, Rb, Cs: the Specific Role of Alkalis
• Crystal Structures of Polymerized Fullerides AC60, A=K, Rb, Cs and Alkali-mediated Interactions
• Theoretical model for the structural phase transition at the metal- insulator transition in polymerized KC60