Diluted Magnetic Semiconductor at Finite Temperature

Details Diluted Magnetic Semiconductor at Finite Temperature Diluted Magnetic Semiconductor at Finite Temperature

2003-03-18

arxiv.org/abs/cond-mat/0303328v3

Phys. Lett. A 327, 73 (2004)

Physics

Condensed Matter

Materials Science

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

Scientific paper

10.1016/j.physleta.2004.04.026

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.

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