Electronic properties of Boron Nitride sheet and nanotube in the presence of transverse magnetic field

• Theoretical calculation of density of states and specific heat in the presence of magnetic field.
• The investigation of specific heat versus temperature for different magnetic field and Hubbard parameter.
• The investigation of density of states for various magnetic field and Hubbard parameter.

We study the effects of a transverse magnetic field on the electronic properties of both Boron-Nitride monolayer and zigzag nanotubes in the context of Hubbard model at the antiferromagnetic sector. In particular, the behavior of density of states and temperature dependence of specific heat have been investigated. Mean field approximation has been employed in order to obtain the electronic spectrum of the system. Our results show the band gap in the density of states broadens with an increase of Hubbard parameter. Whereas the band gap width decreases with magnetic field. Also specific heat of Boron Nitride sheet is found to be exponentially increasing behavior with temperature at low values of it and for all the magnetic field values. However specific heat reaches its maximum value at finite temperature and specific heat starts to decrease upon more increase of temperature. Furthermore the effect of magnetic field and Hubbard interaction on the density of states and specific heat of Boron Nitride nanotubes has been studied.