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cond-mat.mtrl-sci2025
High Harmonic Spectroscopy from Lower-Order to Higher-Order Topological Insulators
Bryan Lorenzo, Carlos Batista, Milad Jangjan +7
Over the past decades, high-harmonic spectroscopy (HHS) has emerged as a powerful tool for all-optical probing of topological properties of solids. There are outstanding questions…
cond-mat.mtrl-sci2025
Second-order microscopic nonlinear susceptibility in a centrosymmetric material: application to imaging valence electron motion
Chance Ornelas-Skarin, Tatiana Bezriadina, Matthias Fuchs +10
We report measurements of phase-matched nonlinear x-ray and optical sum-frequency generation from single-crystal silicon using sub-resonant 0.95 eV laser pulses and 9.5 keV hard x-…