论文信息 - Interaction of Excitonic Magnetic Polaron Pairs in Diluted Magnetic Semiconductor(Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties)

Interaction of Excitonic Magnetic Polaron Pairs in Diluted Magnetic Semiconductor(Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties)

Excitonic magnetic polarons in diluted magnetic semiconductor formed by the interaction between exciton carriers and magnetic ions within the range of exciton wave function are theoretically investigated. The Heitler–London model is applied to the polaron molecule. The binding energy of the exiton pair in triplet state is calculated and it is found that an attraction between triplet magnetic polaron pairs can occur.

Ki-ichi Nakamura

[1] S. Sarma,et al. Shallow-donor wave functions and donor-pair exchange in silicon: Ab initio theory and floating-phase Heitler-London approach , 2004, cond-mat/0402266.

[2] S. Das Sarma,et al. Polaron percolation in diluted magnetic semiconductors. , 2002, Physical review letters.

[3] R. Bhatt,et al. Bound magnetic polaron interactions in insulating doped diluted magnetic semiconductors , 2001, cond-mat/0111497.

[4] T. Sato,et al. Formation dynamics of free excitonic magnetic polarons in Cd1−xMnxTe , 2001 .

[5] D. Angelescu,et al. Effective interaction Hamiltonian of polaron pairs in diluted magnetic semiconductors , 2000, cond-mat/0012279.

[6] T. Dietl,et al. Effect of thermodynamic fluctuations of magnetization on the bound magnetic polaron in dilute magnetic semiconductors , 1983 .

[7] P. Wolff,et al. Spin-flip Raman scattering, bound magnetic polaron, and fluctuations in (Cd,Mn)Se , 1983 .

[8] M. Hattori,et al. Method of Symmetry-Breaking Potential in Statistical Mechanics of the Long-Range Order , 1973 .