Regular Article

Electronic properties of a graphene nanotorus under the action of external fields

Universidade Federal do Cariri(UFCA), Av. Tenente Raimundo Rocha, Cidade Universitária, Juazeiro do Norte, Ceará, CEP 63048-080, Brasil

^a e-mail: euclides.silva@ufca.edu.br

Received: 1 September 2020
Accepted: 15 October 2020
Published online: 7 December 2020

Abstract

In this paper we study the properties of an electron trapped on a torus surface. We consider the influence of surface curvature on the spectrum and the behaviour of the wave function. In addition, the effects of external electric and magnetic fields were explored. Two toroid configurations were considered, namely, a torus-like configuration and a ring-like configuration both in agreement with experimental data. We also obtain the bound states and discuss the role of geometry on the Landau levels.