Gunnella, R., Zgrablic, G., Giangrisostomi, E., D'Amico, F., Principi, E., Masciovecchio, C., Di Cicco, A. and Parmigiani, F. (2016). Ultrafast reflectivity dynamics of highly excited Si surfaces below the melting transition. Phys. Rev. B, 94 (15). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

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Abstract

Solid Si under intense femtosecond irradiation is investigated over a wide range of fluences below the melting transition by supercontinuum light (400-800 nm) transient reflectivity. By solving a system of time-dependent equations, the fast and slow components of the energy and carriers diffusion can be disentangled from the reflectivity data, providing considerable insight into the nonequilibrium phase-change dynamics. The study of the fluence values immediately preceding the dramatic melting transition can be useful for discriminating between the thermal and electronic origins of the disordering of the structure by looking at the modification of the solid-state properties of the Si surface.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Gunnella, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zgrablic, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Giangrisostomi, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
D'Amico, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Principi, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Masciovecchio, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Di Cicco, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Parmigiani, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-258332
DOI: 10.1103/PhysRevB.94.155427
Journal or Publication Title: Phys. Rev. B
Volume: 94
Number: 15
Date: 2016
Publisher: AMER PHYSICAL SOC
Place of Publication: COLLEGE PK
ISSN: 2469-9969
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
CONDUCTIVITY RELAXATION-TIME; INDUCED PHASE-TRANSITIONS; ELECTRON-HOLE COLLISIONS; ELEVATED-TEMPERATURES; LASER-PULSES; SILICON; SEMICONDUCTORS; GAAS; RECOMBINATION; IRRADIATIONMultiple languages
Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed MatterMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/25833

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