2019/01/03 by Chao Lian, Lian, Chao, S. B. Zhang +3
Physics and Astronomy · Engineering · #Advanced Thermodynamics and Statistical Mechanics #Spectroscopy and Quantum Chemical Studies #Thermal Radiation and Cooling Technologies
paper · pdf · doi:10.48550/arxiv.1901.00609
Ultrafast light-matter interaction is a powerful tool for the study of solids. Upon laser excitation, carrier multiplication and lattice acceleration beyond thermal velocity can occur, as a result of far-from-equilibrium carrier relaxation. The roles of electron-electron and electron-phonon scatterings are identified by first-principles dynamic simulations, from which a unified phase diagram emerges. It not only explains the experimentally-observed "inertial" melting but also predicts abnormal damping by Pauli Exclusion Principle with a new perspective on ultrahigh-intensity laser applications.