First-principles simulations for excitation of currents in linear carbon chains under femtosecond laser pulse irradiation

Gaoshi Su, Lan Jiang, Feng Wang, Liangti Qu, Yongfeng Lu

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We discuss the response of linear carbon chains to a femtosecond laser pulse. The influence of the chain structure on the excited currents was taken into account. The simulation results showed that excited currents were reversible when laser intensity was relatively weak. An unexpected decrease of current amplitude was found for a laser pulse with a wavelength of 200 nm, which may indicate the transient break of pi bonds in linear carbon chains. For chains with more than 10 atoms, the excited current oscillated with increasing amplitude during simulation time, which was due to the formation of plasma-like resonance.

Original languageEnglish (US)
Pages (from-to)2453-2457
Number of pages5
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume380
Issue number31-32
DOIs
StatePublished - Jan 1 2016

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irradiation
carbon
pulses
excitation
lasers
simulation
plasma resonance
wavelengths
atoms

Keywords

  • Excited current
  • Femtosecond laser
  • Linear carbon chain
  • Time-dependent density functional theory

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

First-principles simulations for excitation of currents in linear carbon chains under femtosecond laser pulse irradiation. / Su, Gaoshi; Jiang, Lan; Wang, Feng; Qu, Liangti; Lu, Yongfeng.

In: Physics Letters, Section A: General, Atomic and Solid State Physics, Vol. 380, No. 31-32, 01.01.2016, p. 2453-2457.

Research output: Contribution to journalArticle

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AB - We discuss the response of linear carbon chains to a femtosecond laser pulse. The influence of the chain structure on the excited currents was taken into account. The simulation results showed that excited currents were reversible when laser intensity was relatively weak. An unexpected decrease of current amplitude was found for a laser pulse with a wavelength of 200 nm, which may indicate the transient break of pi bonds in linear carbon chains. For chains with more than 10 atoms, the excited current oscillated with increasing amplitude during simulation time, which was due to the formation of plasma-like resonance.

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