Abstract
We present a theoretical study of ultrafast phase transitions induced by femtosecond laser pulses of arbitrary form. Molecular-dynamics simulations on time dependent potential-energy surfaces derived from a microscopic Hamiltonian are performed. Applying this method to diamond, we show that a nonequilibrium transition to graphite takes place for a wide range of laser pulse durations and intensities. This ultrafast transition (Formula presented) is driven by the suppression of the diamond minimum in the potential-energy surface of the laser excited system.
Original language | English |
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Pages (from-to) | R3701-R3704 |
Journal | Physical Review B - Condensed Matter and Materials Physics |
Volume | 60 |
Issue number | 6 |
DOIs | |
Publication status | Published - 1999 |
Externally published | Yes |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics