Diluted Magnetic Semiconductor at Finite Temperature

Abstract

We studied the diluted magnetic semiconductor by the self-consistent Green's function approach, which treats the spin-wave kinematics appropriately at finite temperatures. The critical temperature can be obtained by a simple formula in a wide range of parameter space. In addition, the magnetization curve versus temperature is concave, which is dramatically different from the usual convex shape. Finally, we discuss the possibility of generalizing the current theory to include the realistic band structure, electronic correlations and disorders in a systematic way.

REVTeX4, 4 pages, 4 figures, to appear in Physics Letters A

References in corpus (4)

• High Curie temperature GaMnAs obtained by resistance-monitored annealing
• Highly enhanced Curie temperatures in low temperature annealed (Ga,Mn)As epilayers
• Ferromagnetism in magnetically doped III-V semiconductors
• A theory of ferromagnetism in planar heterostructures of (Mn,III)-V semiconductors

Cited by in corpus (6)

• Room temperature ferromagnetism in Cr-doped hydrogenated amorphous Si films
• Softening of Spin-Wave Stiffness near the Ferromagnetic Phase Transition in Diluted Magnetic Semiconductors
• Non-collinear Exchange Coupling in Trilayer Magnetic Junction and its Connection to Fermi Surface Topology
• Spatial trends of non-collinear exchange coupling mediated by itinerant carriers with different Fermi surfaces
• Spin-Wave Relaxation in Diluted Magnetic Semiconductors within the Self-Consistent Green's Function Approach
• Spiral Exchange Coupling in Trilayer Magnetic Junction Mediated by Diluted-Magnetic-Semiconductor Thin Film