Resonant Raman scattering by collective modes of the one-dimensional electron gas

Abstract

We show that the low-energy peak in the polarized resonant Raman spectra of quantum wires, which is commonly associated with ``single particle excitations'', can be interpreted as signature of intra-band collective spin excitations. A broad maximum in the resonant depolarized spectra is predicted to exist above the frequency of the spin density excitation, due to simultaneous but independent propagation of spin- and charge-density modes.

4 pages, accepted for publication in Phys. Rev. Lett

References in corpus (1)

• Collective Excitations in Realistic Quantum Wires

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