Speaker
Nan Xu
(Paul Scherrer Institut)
Description
Recently, topological classification of quantum phases has been extended from non-interacting insulators to strongly correlated insulators, and further to semimetals. In this talk, I will introduce our recent results on direct visualizations of new topological quantum states with angle-resolved photoemission spectroscopy at SLS, including:
• Direct observations of the metallic surface state and its helical spin texture in SmB6 as evidences of the topological Kondo insulator.
• Direct observations of bulk Weyl cones, surface Fermi arcs and their correspondence in transition-metal monophosphides as experimental evidences of the Weyl semimetal.
Primary author
Nan Xu
(Paul Scherrer Institut)
