Signatures of nonthermal melting
Intense ultrashort laser pulses can melt crystals in less than a picosecond but, in spite of over thirty years of active research, for many materials it is not known to what extent thermal and nonthermal microscopic processes cause this ultrafast phenomenon. Here, we perform ab-initio molecular-dyna...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC and ACA
2015-09-01
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| Series: | Structural Dynamics |
| Online Access: | http://dx.doi.org/10.1063/1.4928686 |
| _version_ | 1818617721655394304 |
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| author | Tobias Zier Eeuwe S. Zijlstra Alan Kalitsov Ioannis Theodonis Martin E. Garcia |
| author_facet | Tobias Zier Eeuwe S. Zijlstra Alan Kalitsov Ioannis Theodonis Martin E. Garcia |
| author_sort | Tobias Zier |
| collection | DOAJ |
| description | Intense ultrashort laser pulses can melt crystals in less than a picosecond but, in spite of over thirty years of active research, for many materials it is not known to what extent thermal and nonthermal microscopic processes cause this ultrafast phenomenon. Here, we perform ab-initio molecular-dynamics simulations of silicon on a laser-excited potential-energy surface, exclusively revealing nonthermal signatures of laser-induced melting. From our simulated atomic trajectories, we compute the decay of five structure factors and the time-dependent structure function. We demonstrate how these quantities provide criteria to distinguish predominantly nonthermal from thermal melting. |
| first_indexed | 2024-12-16T17:10:12Z |
| format | Article |
| id | doaj.art-76bbb611cc844d7d87b02c33d4739d39 |
| institution | Directory Open Access Journal |
| issn | 2329-7778 |
| language | English |
| last_indexed | 2024-12-16T17:10:12Z |
| publishDate | 2015-09-01 |
| publisher | AIP Publishing LLC and ACA |
| record_format | Article |
| series | Structural Dynamics |
| spelling | doaj.art-76bbb611cc844d7d87b02c33d4739d392022-12-21T22:23:26ZengAIP Publishing LLC and ACAStructural Dynamics2329-77782015-09-0125054101054101-910.1063/1.4928686001505SDYSignatures of nonthermal meltingTobias Zier0Eeuwe S. Zijlstra1Alan Kalitsov2Ioannis Theodonis3Martin E. Garcia4 Theoretical Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), Universität Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany Theoretical Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), Universität Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany MINT, University of Alabama, Tuscaloosa, Alabama 35487, USA Department of Physics, National Technical University, GR-15773 Zografou, Athens, Greece Theoretical Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), Universität Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, GermanyIntense ultrashort laser pulses can melt crystals in less than a picosecond but, in spite of over thirty years of active research, for many materials it is not known to what extent thermal and nonthermal microscopic processes cause this ultrafast phenomenon. Here, we perform ab-initio molecular-dynamics simulations of silicon on a laser-excited potential-energy surface, exclusively revealing nonthermal signatures of laser-induced melting. From our simulated atomic trajectories, we compute the decay of five structure factors and the time-dependent structure function. We demonstrate how these quantities provide criteria to distinguish predominantly nonthermal from thermal melting.http://dx.doi.org/10.1063/1.4928686 |
| spellingShingle | Tobias Zier Eeuwe S. Zijlstra Alan Kalitsov Ioannis Theodonis Martin E. Garcia Signatures of nonthermal melting Structural Dynamics |
| title | Signatures of nonthermal melting |
| title_full | Signatures of nonthermal melting |
| title_fullStr | Signatures of nonthermal melting |
| title_full_unstemmed | Signatures of nonthermal melting |
| title_short | Signatures of nonthermal melting |
| title_sort | signatures of nonthermal melting |
| url | http://dx.doi.org/10.1063/1.4928686 |
| work_keys_str_mv | AT tobiaszier signaturesofnonthermalmelting AT eeuweszijlstra signaturesofnonthermalmelting AT alankalitsov signaturesofnonthermalmelting AT ioannistheodonis signaturesofnonthermalmelting AT martinegarcia signaturesofnonthermalmelting |