Abstract
We employ an exact solution of the simplest model for pump-probe time-resolved photoemission spectroscopy in charge-density-wave systems to show how, in nonequilibrium, the gap in the density of states disappears while the charge density remains modulated, and then the gap reforms after the pulse has passed. This nonequilibrium scenario qualitatively describes the common short-time experimental features in and , indicating a quasiuniversality for nonequilibrium “melting” with qualitative features that can be easily understood within a simple picture.
- Received 21 April 2013
DOI:https://doi.org/10.1103/PhysRevLett.112.176404
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