Coherent A{sub 1g} and E{sub g} phonons of antimony

Journal Article · Sun Jun 15 00:00:00 EDT 2008 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.2940130· OSTI ID:21137357

Ishioka, Kunie; Kitajima, Masahiro ^[1]; Misochko, Oleg V ^[2]

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1. Advanced Nano-Characterization Center, National Institute for Materials Science, Tsukuba, 305-0047 (Japan)
2. Institute of Solid State Physics, Russian Academy of Sciences, 142432 Chernogolovka, Moscow Region (Russian Federation)

We report the ultrafast dynamics of the coherent A{sub 1g} and E{sub g} phonons of antimony as a function of temperature and optical polarization. Like in bismuth, the two phonon modes exhibit nearly {pi}/2 difference in their initial phase, suggesting their different coupling strengths with photoexcited electrons. The dependence of the phonon amplitude on the optical polarization and temperature indicates the generation of the coherent A{sub 1g} phonons through both displacive and Raman processes, rather than a purely displacive one. In contrast, the generation of the coherent E{sub g} phonons can be understood within Raman framework alone.

• OSTI ID: 21137357
• Journal Information: Journal of Applied Physics, Vol. 103, Issue 12; Other Information: DOI: 10.1063/1.2940130; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLITUDES
ANTIMONY
BISMUTH
ELECTRONS
PHONONS
POLARIZATION
TEMPERATURE DEPENDENCE