Spin-charge separation of plasmonic excitations in thin topological insulators

We discuss plasmonic excitations in a thin slab of topological insulators. In the limit of no hybridization of the surface states and same electronic density of the two layers, the electrostatic coupling between the top and bottom layers leads to optical and acoustic plasmons which are purely charge...

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Veröffentlicht in:	Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2013-11, Vol.88 (20), Article 205427
Hauptverfasser:	Stauber, T., Gómez-Santos, G., Brey, L.
Format:	Artikel
Sprache:	eng
Schlagworte:	Charge Condensed matter Density Electronics Excitation Insulators Plasmonics Topology
Online-Zugang:	Volltext
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