Field-induced ferromagnetic phase transition in 2D Fermi systems with magnetic dipole-dipole interaction
Mesoscale and Nanoscale Physics
2018-12-10 v1 Statistical Mechanics
Abstract
Magnetic properties of the two-dimensional spin-polarized Fermi gas with dipole-dipole interaction are studied in the presence of external magnetic field at zero temperature. Within perturbation theory and the second quantization formalism, the total energy is explicitly obtained as a function of three dimensionless parameters, the spin polarization, dipolar coupling and Zeeman parameters. We examine the effects of these agents on the magnetic properties of 2D Fermi gas. The results show that an induced ferromagnetic phase transition is observed only for adequately large values of magnetic field. This paper offers two controllable factors to change the spin polarization of the system.
Keywords
Cite
@article{arxiv.1812.02913,
title = {Field-induced ferromagnetic phase transition in 2D Fermi systems with magnetic dipole-dipole interaction},
author = {G. H. Bordbar and F. Pouresmaeeli and A. Poostforush},
journal= {arXiv preprint arXiv:1812.02913},
year = {2018}
}
Comments
15 pages, 8 figures