Aufsatz in einer Fachzeitschrift
Microscopic analysis of the laser-induced femtosecond graphitization of diamond
Details zur Publikation
Autor(inn)en: | Jeschke, H.; Garcia, M.; Bennemann, K. |
Verlag: | AMER PHYSICAL SOC |
Publikationsjahr: | 1999 |
Zeitschrift: | Physical Review B |
Seitenbereich: | R3701-R3704 |
Abkürzung der Fachzeitschrift: | Phys. Rev. |
Jahrgang/Band : | 60 |
Erste Seite: | R3701 |
Letzte Seite: | R3704 |
Seitenumfang: | 4 |
ISSN: | 1098-0121 |
Zusammenfassung, 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 (similar to 100 fs) is driven by the suppression of the diamond minimum in the potential-energy surface of the laser excited system. [S0163-1829(99)50730-3].
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 (similar to 100 fs) is driven by the suppression of the diamond minimum in the potential-energy surface of the laser excited system. [S0163-1829(99)50730-3].
