Aufsatz in einer Fachzeitschrift
Anharmonic noninertial lattice dynamics during ultrafast nonthermal melting of InSb



Details zur Publikation
Autor(inn)en:
Zijlstra, E.; Garcia, M.
Publikationsjahr:
2008
Zeitschrift:
Physical Review Letters
Seitenbereich:
135701
Abkürzung der Fachzeitschrift:
PRL
Jahrgang/Band:
101
ISSN:
0031-9007
eISSN:
1079-7114

Zusammenfassung, Abstract
We compute the potential energy surface of femtosecond-laser-excited InSb along the directions in which the crystal becomes soft. Using dynamical simulations the time dependence of the atomic coordinates is obtained. We find that at high excitation densities the anharmonicity of the potential energy surface becomes significant after similar to 100 fs. On the basis of our results we explain recent time-resolved x-ray diffraction experiments. We point out that an alternative model for ultrafast melting [A. M. Lindenberg et al., Science 308, 392 (2005)] is inconsistent with our calculations.


Autor(inn)en / Herausgeber(innen)

Zuletzt aktualisiert 2019-01-11 um 16:06