Physical Properties of the Spin Hamiltonian on Honeycomb Lattice Samples with Kekulé and Vacuum Polarization Corrections

Abstract

Magnetic and thermodynamical properties of a system of spins in a honeycomb lattice, such as magnetization, magnetic susceptibility and specific heat, in a low-temperature regime are investigated by considering the effects of a Kekulé scalar exchange and QED vacuum polarization corrections to the interparticle potential. The spin lattice calculations are carried out by means of Monte Carlo simulations. We present a number of comparative plots of all the physical quantities we have considered and a detailed analysis is presented to illustrate the main features and the variation profiles of the properties with the applied external magnetic field and temperature.

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References in corpus (12)

• The structure of suspended graphene sheets
• Electron fractionalization in two-dimensional graphenelike structures
• Graphene as an electronic membrane
• Effects of topological defects and local curvature on the electronic properties of planar graphene
• Spin-Dependent Macroscopic Forces from New Particle Exchange
• Charge inhomogeneities due to smooth ripples in graphene sheets
• Chiral Gauge Theory for Graphene
• Irrational vs. rational charge and statistics in two-dimensional quantum systems
• Gauge fields and curvature in graphene
• Fractional statistics of topological defects in graphene and related structures
• Comparative aspects of spin-dependent interaction potentials for spin-1/2 and spin-1 matter fields
• Search for Spin-Dependent Short-Range Force Using Optically Polarized ${}^3$He Gas