Sudheer Anand Sreedhar, University of California, Davis

Abstract:

Ultra-violet Angle-resolved photoemission is a surface sensitive technique, often probing only a few atomic layers below the surface, limited by the inlastic mean free path of photoelectrons being less than 1nm. Yet it remains the only technique capable of direct visualisation of electronic structure. This limitation often results in interesting interplay between local surface features and observed electronic structure. In topological quantum materials, more importantly, surface features play a crucial role in determining defining topological features, necessitating simultaneous quantitative measurement of both the local surface chemistry and electronic structure. In this work we demonstrate an approach to use photoemission spectroscopy to perform these simultaneous measurements in a prototypical system, Co3Sn2S2, a magnetic weyl semimetal.

Poster Session Link: https://gather.town/invite?token=0pEoq7VP

If you have any questions for the presenter, please contact them via email: ssreedhar@ucdavis.edu