- Tytuł:
- Single Particle and Collective Spin Excitations in Semimagnetic Quantum Wells
- Autorzy:
-
Perez, F.
Jusserand, B.
Richards, D.
Karczewski, G. - Powiązania:
- https://bibliotekanauki.pl/articles/2038315.pdf
- Data publikacji:
- 2004-09
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
72.25.Dc
73.21.-b
75.70.-i
78.30.-j - Opis:
- Collective and single-particle spin-flip excitations of a two-dimensional electron gas in a semimagnetic Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te quantum well are observed by resonant Raman scattering. Application of a magnetic field splits the spin-subbands and a spin-polarization is induced in the electron gas. Above some critical field, a collective spin-flip mode, which disperses with in-plane wave vector, dominates the spectra. The energy of this mode is given by the bare Zeeman energy at vanishing wave vector as predicted by Larmor's theorem and its in-plane dispersion is well described by a model of the interacting polarizability of a spin polarized electron gas when both exchange and correlation are taken into account.
- Źródło:
-
Acta Physica Polonica A; 2004, 106, 3; 311-317
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł