Abstract

Topological semimetals – especially when reduced to the 2D limit – show great promise for applications in future low-energy electronics and quantum information processing. Scanning tunnelling microscopy and spectroscopy (STM/STS) can provide unique insight into their atomic and electronic structure, in both real- and momentum space, and with high spatial and spectroscopic resolution. We present an overview of our recent progress in electronic structure mapping of topological semimetals. In particular, we present Fermi surface and band structure mapping of the nodal-line semimetal ZrSiS [1], and explore topological phases within layered transition metal dichalcogenides (TMDs).


References

  1. Lodge et al., Nano Letters, 17, 7213 (2017)

Speaker’s Bio

Weber joined the School of Physical and Mathematical Sciences at NTU in 2017 as Nanyang Assistant Professor and Singapore National Research Foundation (NRF) Fellow. He investigates atomic and electronic structure of two-dimensional (2D) and topological materials for their application in future low-energy electronics and quantum information processing.

Weber received his Ph.D. from the University of New South Wales (UNSW) in Sydney, Australia. Part of the Centre for Quantum Computation and Communication Technology (CQC2T), he contributed to the development of an atomic-precision fabrication scheme for the engineering of atomic-scale silicon devices in donor-based quantum information processing.

Weber has since worked as Australian Research Council (ARC) DECRA Fellow at the Centre of Atomically Thin Materials (MCATM), Monash University, and within the ARC Centre of Excellence for Future Low Energy Electronics Technologies (FLEET) where he is an Associate Investigator.