Laser-induced coherent phonons in graphite and carbon nanotubes: Model and simulations

M. E. Garcia, T. Dumitricǎ, Harald Olaf Jeschke

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

We present a microscopic description of the excitation of coherent phonons as a response to femtosecond laser excitation. Using molecular dynamics simulations based on a tight-binding electronic Hamiltonian we discuss two examples of laser-induced coherent phonons: (1) excitation of the E 2g1 phonon mode in graphite under high external pressure and (2) the displacive excitation of two perpendicular phonon modes in carbon nanotubes. We discuss the influence of these coherent phonons on the ablation mechanisms.

Original languageEnglish
Pages (from-to)855-857
Number of pages3
JournalApplied Physics A: Materials Science and Processing
Volume79
Issue number4-6
Publication statusPublished - Sep 2004
Externally publishedYes

Fingerprint

Carbon Nanotubes
Graphite
Phonons
Carbon nanotubes
nanotubes
phonons
graphite
carbon nanotubes
Lasers
excitation
lasers
Hamiltonians
Laser excitation
simulation
Ablation
Ultrashort pulses
Molecular dynamics
ablation
Computer simulation
molecular dynamics

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy (miscellaneous)

Cite this

Laser-induced coherent phonons in graphite and carbon nanotubes : Model and simulations. / Garcia, M. E.; Dumitricǎ, T.; Jeschke, Harald Olaf.

In: Applied Physics A: Materials Science and Processing, Vol. 79, No. 4-6, 09.2004, p. 855-857.

Research output: Contribution to journalArticle

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