Metallic and insulating states in two-dimensional C60-polymers

Details Metallic and insulating states in two-dimensional C60-polymers Metallic and insulating states in two-dimensional C60-polymers

1995-05-26

arxiv.org/abs/cond-mat/9505133v1

Chem. Phys. Lett. 242 (1995) 585-591

Physics

Condensed Matter

Figures should be requested to the author

Scientific paper

10.1016/0009-2614(95)00784-2

Variations in the band structures of the two-dimensional C60-polymers are studied, when pi-conjugation conditions are changed. We investigate the rectangular and triangular polymers, in order to discuss metal-insulator transitions, using a semiempirical model with the Su-Schrieffer-Heeger type electron-phonon interactions. We find that electronic structures change among direct-gap insulators and the metal, depending on the degree of pi-conjugations in the rectangular polymer. The triangular polymer changes from the indirect gap insulator to the metal as the pi-conjugations increase. High pressure experiments could observe such pressure-induced metal-insulator transitions.

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