Physics – Condensed Matter
Scientific paper
2003-11-05
Phys. Rev. B 69, 085322 (2004)
Physics
Condensed Matter
15 pages, 7 figures, replaced by revised version. To appear in Phys. Rev. B
Scientific paper
10.1103/PhysRevB.69.085322
We investigate the emission of multimodal polarized light from Light Emitting Devices due to spin-aligned carriers injection. The results are derived through operator Langevin equations, which include thermal and carrier-injection fluctuations, as well as non-radiative recombination and electronic g-factor temperature dependence. We study the dynamics of the optoelectronic processes and show how the temperature-dependent g-factor and magnetic field affect the polarization degree of the emitted light. In addition, at high temperatures, thermal fluctuation reduces the efficiency of the optoelectronic detection method for measuring spin-polarization degree of carrier injection into non-magnetic semicondutors.
de Oliveira Mendes Cl.
Sun He Bi
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