Cr2.37Ga3Se8: A Quasi-Two-Dimensional Magnetic Semiconductor

Quasi two-dimensional carriers in dilute-magnetic-semiconductor quantum wells under in-plane magnetic field

Due to the competition between spatial and magnetic confinement, the density of states of a quasi two-dimensional system deviates from the ideal step-like form both quantitatively and qualitatively. We study how this affects the spin-subband populations and the spin-polarization as functions of the temperature, T , and the in-plane magnetic field, B, for narrow to wide dilute-magnetic-semicondu...

Magnetic phases of the quasi-two-dimensional compounds FexCo1 - xTa2O6.

We report new results on the magnetic properties of the FexCo1 - xTa2O6 series of compounds. Essentially using neutron-diffraction and magnetic measurements we study, in more detail, the low-x limit of the temperature versus x phase diagram, where a new bicritical point is observed. The complete phase diagram shows three different magnetic phases at low temperature, for a high, intermediate and...

Quasi-two-dimensional excitons in finite magnetic fields

We present a theoretical and experimental investigation of the effects of a magnetic field on quasi-twodimensional excitons. We calculate the internal structures and dispersion relations of spatially direct and indirect excitons in single and coupled quantum wells in a magnetic field perpendicular to the well plane. We find a sharp transition from a hydrogenlike exciton to a magnetoexciton with...

Magnetic quantum oscillations in quasi-two-dimensional metals

Two–Dimensional Magnetic Solitons and Thermodynamics of Quasi–Two–Dimensional Magnets

The article reviews two–dimensional magnetic solitons in a classical weakly– anisotropic Heisenberg magnets. Topological classification, structure, dynamical properties and thermodynamical contribution of 2D solitons to response functions of the magnet are discussed. On the basis of taking in the paper effective equations of motion we calculated the soliton contribution to the dynamical structu...