Regular Article

The model of the fullerene C₆₀ and its ions C₆₀⁺, C₆₀⁻ pseudopotentials for molecular dynamics purposes^★

¹ ITMO University, 49 Kronverksky Pr., St. Petersburg, 197101, Russia
² Peter the Great Saint-Petersburg Polytechnic University, 29 Politekhnicheskaya, St. Petersburg 195251, Russia

^a e-mail: cyr96@mail.ru

Received: 13 May 2018
Received in final form: 6 September 2018
Published online: 14 November 2018

Abstract

The model pseudopotentials of C₆₀⁻, C₆₀ and C₆₀⁺ have been constructed on the base of the total electrostatic potentials obtained as a result of ab initio-based calculations. The radial distance dependence of the pseudopotential is obtained by averaging with respect to the spherical angles of the total electrostatic potential. The role of the electronic correlations is investigated by comparison results of using of the different exchange-correlation functional within the density functional theory. All pseudopotentials are fitted by the fine approximation functions and can be applied for molecular dynamics tasks.