Abstract
Collective and single-particle spin-flip excitations of a two-dimensional electron gas in a semimagnetic Cd{sub 1-x}Mn{sub x}Te quantum well are observed by resonant Raman scattering. Application of magnetic field splits the spin-subbands and spin-polarization is induced in the electron gas. Above some critical field, a collective spin-flip mode, which disappears with in-plane wave vector, dominates the spectra. The energy of this mode is given by the Zeeman energy at vanishing wave vector as predicted bu 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. (author)
Perez, F;
Jusserand, B;
[1]
Richards, D;
[2]
Karczewski, G
[3]
- CNRS/LPN Marcoussis (France)
- Dept. of Physics, Kings College London, London (United Kingdom)
- Institue of Physics, Polish Academy of Sciences, Warsaw (Poland)
Citation Formats
Perez, F, Jusserand, B, Richards, D, and Karczewski, G.
Single particle and collective spin excitations in semimagnetic quantum wells.
Poland: N. p.,
2004.
Web.
Perez, F, Jusserand, B, Richards, D, & Karczewski, G.
Single particle and collective spin excitations in semimagnetic quantum wells.
Poland.
Perez, F, Jusserand, B, Richards, D, and Karczewski, G.
2004.
"Single particle and collective spin excitations in semimagnetic quantum wells."
Poland.
@misc{etde_20617102,
title = {Single particle and collective spin excitations in semimagnetic quantum wells}
author = {Perez, F, Jusserand, B, Richards, D, and Karczewski, G}
abstractNote = {Collective and single-particle spin-flip excitations of a two-dimensional electron gas in a semimagnetic Cd{sub 1-x}Mn{sub x}Te quantum well are observed by resonant Raman scattering. Application of magnetic field splits the spin-subbands and spin-polarization is induced in the electron gas. Above some critical field, a collective spin-flip mode, which disappears with in-plane wave vector, dominates the spectra. The energy of this mode is given by the Zeeman energy at vanishing wave vector as predicted bu 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. (author)}
journal = []
issue = {3}
volume = {106}
journal type = {AC}
place = {Poland}
year = {2004}
month = {Jul}
}
title = {Single particle and collective spin excitations in semimagnetic quantum wells}
author = {Perez, F, Jusserand, B, Richards, D, and Karczewski, G}
abstractNote = {Collective and single-particle spin-flip excitations of a two-dimensional electron gas in a semimagnetic Cd{sub 1-x}Mn{sub x}Te quantum well are observed by resonant Raman scattering. Application of magnetic field splits the spin-subbands and spin-polarization is induced in the electron gas. Above some critical field, a collective spin-flip mode, which disappears with in-plane wave vector, dominates the spectra. The energy of this mode is given by the Zeeman energy at vanishing wave vector as predicted bu 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. (author)}
journal = []
issue = {3}
volume = {106}
journal type = {AC}
place = {Poland}
year = {2004}
month = {Jul}
}