Metallic and insulating states in two-dimensional C60 polymers

✍ Scribed by Kikuo Harigaya

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 574 KB
• Volume: 242
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(95)00784-2

✦ Synopsis

Variations

in the band structures of the two-dimensional C, polymers are studied, when the r-conjugation conditions are changed. We investigate the rectangular and triangular polymers, in order to discuss metal-insulator transitions, using a semi-empirical model with Su-Schrieffer-Heeger-type electron-phonon interactions. We find that the electronic structures change among direct-gap insulators and the metal, depending on the degree of T conjugations in the rectangular polymer. The triangular polymer changes from the indirect gap insulator to the metal as the TT conjugations increase. High pressure experiments could observe such pressure-induced metal-insulator transitions.