Whole Spectrum Of The Spin Polarized Two Dimensional Electron Gas

Florent Perez (1) , Bernard Jusserand (1) , Grzegorz Karczewski

1 INSP - Institut des Nanosciences de Paris

Collective and individual spin-flip and spin-conserving excitations of a two-dimensional spin-polarized electron-gas in a semimagnetic Cd1–xMnxTe quantum well are observed by resonant Raman scattering. Application of a magnetic field splits the spin subbands and a static spin polarization is induced. Wavevector and field experimental dispersions are very well reproduced by calculations one when both exchange and correlation corrections are taken into account. A maximum polarization rate of 40% is deduced from measurements.

Mots clés: semiconductor quantum wells; cadmium compounds; manganese compounds; tellurium compounds; electron spin polarisation; two-dimensional electron gas; semimagnetic semiconductors; Raman spectra

Florent Perez, Bernard Jusserand, Grzegorz Karczewski. Whole Spectrum Of The Spin Polarized Two Dimensional Electron Gas. PHYSICS OF SEMICONDUCTORS: 27th International Conference on the Physics of Semiconductors - ICPS-27, 2005, Flagstaff, United States. pp.1295, ⟨10.1063/1.1994586⟩. ⟨hal-00016812⟩