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Condensed matter systems have now became a fertile ground to study emerging topological quasi-particles with symmetry protected edge mode. While extensive studies are focused on Fermionic excitations, the same conceptual framework can also be applied to Bosonic systems and yield new types of topological states. In this talk, I will show our recent inelastic x-ray scattering study of transition metal monosilicide. By directly map out the phonon band structure, we discovered the double-Weyl points, which have not been observed in electronic systems. Our study thus provides transition metal monosilicides as ideal platform to explore emerging Bosonic excitations and its topological non-trivial edge modes.
Hu Miao received his PhD in condensed matter physics from the Institute of Physics, Chinese Academy of Sciences (IOP, CAS) in 2015. He then joined Brookhaven National Laboratory as a postdoctoral research associate working as part of the Center for Emergent Superconductivity (CES).
His current research interests are using X-ray scattering techniques, such as RIXS, IXS, REXS, XPCS, XNCD et al, and ARPES to study the magnetic/charge excitations and the pairing mechanism of unconventional superconductors. Hu Miao is the author of 30 peer-reviewed scientific papers. His work is cited more than 1250 times (from Google scholar).