Raman Spectroscopy of Quantum Wires and Dots: Magnetoplasmons and Edge-Spin-Density Modes

DOI zum Zitieren dieses Dokuments:: 10.5283/epub.9699

Schüller, Christian

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Veröffentlichungsdatum dieses Volltextes: 05 Okt 2009 13:29

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Zusammenfassung

We review recent magneto-Raman experiments on electronic excitations in GaAs–AlGaAs quantum wires and dots. We observe simultaneously collective spin-density and charge-density excitations (SDEs and CDEs), and also single-particle-like excitations. In a magnetic field, the CDEs (magnetoplasmons) exhibit a complex anticrossing behavior, which, in quantum wires, strongly depends on the direction of ...