Magnetic Response in a Zigzag Carbon Nanotube
  Magnetic response of interacting electrons in a zigzag carbon nanotube threaded by a magnetic flux is investigated within a Hartree-Fock mean field approach. Following the description of energy spectra for both non-interacting and interacting cases we analyze the behavior of persistent current in individual branches of a nanotube. Our present investigation leads to a possibility of getting a filling-dependent metal-insulator transition in a zigzag carbon nanotube. 
Paramita Dutta, Santanu K. Maiti and S. N. Karmakar
cond-mat.mes-hall