https://doi.org/10.1140/epjb/e2010-00220-5
Quasi-one dimensional graphite ribbon structures in the presence of a magnetic field and the on-site Coulomb correlation at half-filling
1
Department of Physics, Scottish Church College,
1 & 3 Urquhart Square, 700006 Kolkata, India
2
Department of Physics, Visva-Bharati,
Santiniketan, 731235 West Bengal, India
3
TCMP Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, 700064 Kolkata, India
4
Department of Physics and Astrophysics, West Bengal State University, Barasat, 700126 Kolkata, India
5
Department of Physics, Jadavpur University, 700032 Kolkata, India
Corresponding author: a jyt_ch@yahoo.com
Received:
13
January
2010
Revised:
16
May
2010
Published online:
16
July
2010
We have presented the role of the Coulomb interaction (U) and the magnetic
field 
on the ground state properties of the quasi-one dimensional
graphite ribbon structures at half-filling. Mean field Hartree-Fock
Approximation is used to study the systems. To understand the boundary effects
in graphite structures, we have compared the results of these systems
with those of the square lattice ribbon structures. Studying the density of
states, the Drude weight and the charge gap, we have drawn the U – B phase
diagrams for the zigzag and the armchair graphite ribbons.
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2010
