Title :
Observation of Floquet-Bloch states on the surface of a topological insulator
Author :
Wang, Y.H. ; Steinberg, H. ; Jarillo-Herrero, P. ; Gedik, N.
Author_Institution :
Dept. of Phys., Massachusetts Inst. of Technol., Cambridge, MA, USA
Abstract :
Using time- and angle-resolved photoemission spectroscopy, we show that an intense ultrashort mid-infrared pulse with energy below the bulk band gap hybridizes with the surface Dirac fermions of a topological insulator to form Floquet-Bloch bands.
Keywords :
energy gap; fermion systems; surface states; topological insulators; Floquet-Bloch state; angle-resolved photoemission spectroscopy; band gap; surface Dirac fermions; topological insulator; ultrashort mid-infrared pulse; Optical polarization; Optical pulses; Photoelectricity; Photonic band gap; Photonics; Spectroscopy; Topological insulators;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2014 Conference on
Conference_Location :
San Jose, CA
