3 papers
cond-mat.str-el2026
Second Harmonic Generation Spectroscopy of the Surface Charge Density Wave in the Weyl Semimetal CoSi
Awadhesh K. Das, Wesley E. Deeg, Sujan Subedi +3
Using temperature-dependent rotational anisotropy second harmonic generation (RA-SHG), we identify a charge density wave (CDW) instability on the CoSi (001) face with an onset temp…
cond-mat.mtrl-sci2026
Electrically switchable ferron upconversion in a van der Waals ferroelectric
Sujan Subedi, Wuzhang Fang, Fan Fei +7
Nonlinear phononics provides a powerful ultrafast route to control lattice excitations, enabling access to hidden quantum orders, phononic computing, and quantum transduction. Howe…
cond-mat.mes-hall2021
Direct Measurement of Helicoid Surface States in RhSi using Nonlinear Optics
Dylan Rees, Baozhu Lu, Yue Sun +6
Despite the fundamental nature of the edge state in topological physics, direct measurement of electronic and optical properties of the Fermi arcs of topological semimetals has pos…