The Superconductor- like Effects of the Chiral Toroidal Carbon Nanotubes in a Magnentic Field

The superconducting ring-like property and the chiral effects of persistent currents intoroidal carbon nanotubes (TCNTs) are studied in this paper by using the electronic state energy formula of chiral TCNTs derived from the energy dispersion relation of the graphene sheet. When T=0 K, the persistent current of metallic and semiconductortype TCNTs is a linealy periodical function ofΦ, with a periodΦ0, but it is very sensitive to chiral angleθand toroidal radiusR. The persistent currents in chiral TCNTs are much stronger than in the achiral TCNTs. It also have been discovered that persistent currents decrease when toroidal radiusRincrease or temperature rise,and the decreasing rate depends the chiral angleθof TCNTs