Document Type
Article
Publication Date
4-20-2011
Publisher
American Physical Society
Abstract
We use time-resolved x-ray absorption spectroscopy to investigate the unoccupied electronic density of states of warm dense copper that is produced isochorically through the absorption of an ultrafast optical pulse. The temperature of the superheated electron-hole plasma, which ranges from 4000 to 10 000 K, was determined by comparing the measured x-ray absorption spectrum with a simulation. The electronic structure of warm dense copper is adequately described with the high temperature electronic density of state calculated by the density functional theory. The dynamics of the electron temperature is consistent with a two-temperature model, while a temperature-dependent electron-phonon coupling parameter is necessary.
Recommended Citation
Cho, B. I., Engelhorn, K., Correa, A. A., Ogitsu, T., Weber, C. P., Lee, H. J., … Heimann, P. A. (2011). Electronic Structure of Warm Dense Copper Studied by Ultrafast X-Ray Absorption Spectroscopy. Physical Review Letters, 106(16), 167601. https://doi.org/10.1103/PhysRevLett.106.167601
Comments
Copyright © 2011 American Physical Society. Reprinted with permission.