Excitonic Effects in Linear and Photoinduced Faraday Rotation in Semimagnetic Semiconductors |
| P. Leischinga,b, R. Pankokea, C. Bussa, R. Freya, C. Flytzanisa, J. Cibertc and A. Wasielac aEcole Polytechnique, Laboratoire d'Optique Quantique du C.N.R.S., 91128 Palaiseau Cédex, France bMax-Born-Institute, Rudower Chaussee 6, 12489 Berlin, Germany cLab. de Spectrométrie Physique, Université Joseph Fourier-Grenoble and C.N.R.S., 38402 St. Martin d'Hères Cédex, France |
| Full Text PDF |
| We investigate the influence of the Coulomb interaction on the giant linear and photoinduced Faraday rotation in the bulk Cd1-xMnxTe system. Experimental results are presented and discussed by calculating the complex dielectric function. The anisotropy and k-dependence of the magnetic spin-exchange interaction and the Coulomb interaction between optically excited bound and unbound electron-hole pairs are considered using a microscopic theory. At high excitation densities, the excitonic nonlinearities of the 1s transitions are investigated. |
| DOI: 10.12693/APhysPolA.92.895 PACS numbers: 78.66.Hf, 78.20.Ls, 75.30.Et, 42.65.-k |