Surface state photoelectrons in topological insulators and Weyl semimetals

6^th International Conference and Exhibition on Materials Science and Engineering

September 12-14, 2016 Atlanta, USA

David Schmeltzer

City College of New York, USA

Posters & Accepted Abstracts: J Material Sci Eng

Abstract :

We compute the photoemission intensity and polarization for the surface states electrons in topological insulators and Weyl semimetals. The number of emitted photoelectrons is sensitive to the intensity of the laser intensity, whereas the polarization of the photoelectrons is sensitive to the chirality and topology of the surface electrons. We investigate the effect of the Zeeman field and warping. For the Weyl materials, we demonstrate the existence of the Fermi arcs which connect the opposite Weyl nodes. In the presence of a magnetic field, the effect of the EB field gives rise to the chiral anomaly which is observed as a change of the chemical potential, resulting in an enhancement of the intensity in the vicinity of one of the Weyl nodes.

Biography :

Email: dschmeltzer@ccny.cuny.edu