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Contribution of electronic excitation of the structural evolution of ultrafast laser-irradiated tungsten nano films

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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Contribution of electronic excitation of the structural evolution of ultrafast laser-irradiated tungsten nano films. / Murphy, Samuel; Giret, Yvelin; Daraszewicz, Szymon et al.
In: Physical Review B: Condensed Matter and Materials Physics, Vol. 93, 104105, 09.03.2016.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Murphy, S, Giret, Y, Daraszewicz, S, Lim, A, Shluger, A, Tanimura, K & Duffy, D 2016, 'Contribution of electronic excitation of the structural evolution of ultrafast laser-irradiated tungsten nano films', Physical Review B: Condensed Matter and Materials Physics, vol. 93, 104105. https://doi.org/10.1103/PhysRevB.93.104105

APA

Murphy, S., Giret, Y., Daraszewicz, S., Lim, A., Shluger, A., Tanimura, K., & Duffy, D. (2016). Contribution of electronic excitation of the structural evolution of ultrafast laser-irradiated tungsten nano films. Physical Review B: Condensed Matter and Materials Physics, 93, Article 104105. https://doi.org/10.1103/PhysRevB.93.104105

Vancouver

Murphy S, Giret Y, Daraszewicz S, Lim A, Shluger A, Tanimura K et al. Contribution of electronic excitation of the structural evolution of ultrafast laser-irradiated tungsten nano films. Physical Review B: Condensed Matter and Materials Physics. 2016 Mar 9;93:104105. doi: 10.1103/PhysRevB.93.104105

Author

Murphy, Samuel ; Giret, Yvelin ; Daraszewicz, Szymon et al. / Contribution of electronic excitation of the structural evolution of ultrafast laser-irradiated tungsten nano films. In: Physical Review B: Condensed Matter and Materials Physics. 2016 ; Vol. 93.

Bibtex

@article{dbc07d8068e64a49b75f598125dfa683,
title = "Contribution of electronic excitation of the structural evolution of ultrafast laser-irradiated tungsten nano films",
abstract = "The redistribution of the electron density in a material during laser irradiation can have a significant impact on its structural dynamics. This electronic excitation can be incorporated into two temperature molecular dynamics (2T-MD) simulations through the use of electronic temperature dependent potentials. Here, we study the structural dynamics of laser irradiated tungsten nanofilms using 2T-MD simulations with an electronic temperature dependent potential and compare the results to equivalent simulations that employ a ground-state interatomic potential. Electronic excitation leads to an expansion of the crystal and a decrease in the melting point of tungsten. During laser irradiation these factors ensure that the threshold fluences to the different melting regimes are reduced. Furthermore, both heterogenous and homogeneous melting are predicted to occur more rapidly due to excitation and oscillations in the film thickness will be accentuated.",
author = "Samuel Murphy and Yvelin Giret and Szymon Daraszewicz and Anthony Lim and Alexander Shluger and Katsumi Tanimura and Dorothy Duffy",
year = "2016",
month = mar,
day = "9",
doi = "10.1103/PhysRevB.93.104105",
language = "English",
volume = "93",
journal = "Physical Review B: Condensed Matter and Materials Physics",
issn = "1098-0121",
publisher = "AMER PHYSICAL SOC",

}

RIS

TY - JOUR

T1 - Contribution of electronic excitation of the structural evolution of ultrafast laser-irradiated tungsten nano films

AU - Murphy, Samuel

AU - Giret, Yvelin

AU - Daraszewicz, Szymon

AU - Lim, Anthony

AU - Shluger, Alexander

AU - Tanimura, Katsumi

AU - Duffy, Dorothy

PY - 2016/3/9

Y1 - 2016/3/9

N2 - The redistribution of the electron density in a material during laser irradiation can have a significant impact on its structural dynamics. This electronic excitation can be incorporated into two temperature molecular dynamics (2T-MD) simulations through the use of electronic temperature dependent potentials. Here, we study the structural dynamics of laser irradiated tungsten nanofilms using 2T-MD simulations with an electronic temperature dependent potential and compare the results to equivalent simulations that employ a ground-state interatomic potential. Electronic excitation leads to an expansion of the crystal and a decrease in the melting point of tungsten. During laser irradiation these factors ensure that the threshold fluences to the different melting regimes are reduced. Furthermore, both heterogenous and homogeneous melting are predicted to occur more rapidly due to excitation and oscillations in the film thickness will be accentuated.

AB - The redistribution of the electron density in a material during laser irradiation can have a significant impact on its structural dynamics. This electronic excitation can be incorporated into two temperature molecular dynamics (2T-MD) simulations through the use of electronic temperature dependent potentials. Here, we study the structural dynamics of laser irradiated tungsten nanofilms using 2T-MD simulations with an electronic temperature dependent potential and compare the results to equivalent simulations that employ a ground-state interatomic potential. Electronic excitation leads to an expansion of the crystal and a decrease in the melting point of tungsten. During laser irradiation these factors ensure that the threshold fluences to the different melting regimes are reduced. Furthermore, both heterogenous and homogeneous melting are predicted to occur more rapidly due to excitation and oscillations in the film thickness will be accentuated.

U2 - 10.1103/PhysRevB.93.104105

DO - 10.1103/PhysRevB.93.104105

M3 - Journal article

VL - 93

JO - Physical Review B: Condensed Matter and Materials Physics

JF - Physical Review B: Condensed Matter and Materials Physics

SN - 1098-0121

M1 - 104105

ER -