Title

Photon absorption and collective excitations in spintronic superlattices

RIS ID

19501

Publication Details

Zhang, C., Gao, F. & Yang, C. (2007). Photon absorption and collective excitations in spintronic superlattices. Journal of Materials Science: Materials in Electronics, 18 (Supplement 1), 87-91.

Abstract

We calculate the electron density responsefunction of electron-hole multilayer systems in the presenceof spin-orbit interaction modeled by Rashba terms. Itis found that the spin-orbit coupling leads to a redistributionof the absorption spectral weight between the particleholeexcitation and the plasmon excitation. The interplay ofCoulomb interactions and spin-orbit interaction resulted ina suppression or enhancement of the optical absorption dueto plasmons. Our result indicates that the spin-orbit couplingcan serve as a tuning mechanism for opticalabsorption in spintronics systems.

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Link to publisher version (DOI)

http://dx.doi.org/10.1007/s10854-007-9161-4