Eur. Phys. J. B (2012) 85: 126
https://doi.org/10.1140/epjb/e2012-20434-7

Regular Article

Magnetic response in a zigzag carbon nanotube

¹ Theoretical Condensed Matter Physics Division, Saha Institute of Nuclear Physics, Sector-I, Block-AF, Bidhannagar, 700064 Kolkata, India
² School of Chemistry, Tel Aviv University, Ramat Aviv, 69978 Tel Aviv, Israel

^a e-mail: santanu@post.tau.ac.il

Received: 16 January 2012
Received in final form: 20 February 2012
Published online: 18 April 2012

Abstract

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.