Title :
Dirac plasmons in topological insulators
Author :
Autore, M. ; Giorgianni, F. ; Lupi, S.
Abstract :
Topological Insulators are band insulators in their bulk and exhibit metallic states on their surfaces characterized by a Dirac energy/momentum dispersion. In this paper we will present experimental data about Dirac plasmons in TIs as measured through terahertz (THz) spectroscopy. In particular we will discuss their frequency/momentum dispersion and their sub-ps dynamics measured by optical-pump/terahertz-probe spectroscopy.
Keywords :
high-speed optical techniques; optical pumping; surface plasmons; surface states; terahertz wave spectra; topological insulators; Dirac energy dispersion; Dirac momentum dispersion; Dirac plasmons; band insulators; bulk states; frequency dispersion; metallic states; optical-pump-probe spectroscopy; subps dynamics; terahertz spectroscopy; topological insulators; Dispersion; Electron optics; Optical films; Optical polarization; Plasmons; Spectroscopy; Topological insulators;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2015 Conference on
Conference_Location :
San Jose, CA
