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Number of results
2004 | 106 | 3 | 311-317
Article title

Single Particle and Collective Spin Excitations in Semimagnetic Quantum Wells

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EN
Abstracts
EN
Collective and single-particle spin-flip excitations of a two-dimensional electron gas in a semimagnetic Cd_{1-x}Mn_xTe 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.
Keywords
Year
Volume
106
Issue
3
Pages
311-317
Physical description
Dates
published
2004-09
received
2004-06-10
References
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Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv106n303kz
Identifiers
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