New Approach to Metal-Insulator Phase Transition Kinetics in Magnetic Field

Abstract

The metal--insulator phase transition is considered on the basis of Ginzburg-Landau type equations with two different order parameters. An inclusion of magnetic field in this picture is an important step for understanding of behavior of the metal--insulator phase transition kinetics. The magnetic field leads to various singularities of the surface tension and results in drastic variations of the phase transition kinetics. The strongest singularity is due to Landau diamagnetism and determines anomalous features of MI transition kinetics. This singularity supports the well known experimental fact that almost all semimetals behave like diamagnetic materials.