Lack of dependence of the Raman frequency of optical vibrational modes on excitation wavelength in polar nanosemiconductors

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Lack of dependence of the Raman frequency of optical vibrational modes on excitation wavelength in polar nanosemiconductors

Shu-Lin Zhang - Nama Orang; Wei Liu - Nama Orang; Yanbin Zhang - Nama Orang; Zhengdong Fu - Nama Orang; Hongdong Li - Nama Orang;

A lack of dependence of the Raman frequency of optical vibrational modes on excitation wavelength
in polar nanosemiconductors was observed. This is in contrast to the earlier observed dependence in
nonpolar nanomaterials: carbon nanotubes and Si nanowires. This difference has been ascribed to
the different crystallographic natures of their Raman spectra: crystalline for nonpolar and
amorphous for polar nanosemiconductors. The result has been explored theoretically to the Raman
spectra being insensitive to sample sizes and thus indicates that the size confinement effect, a basic
effect in nanomaterials, does not exhibit in the optical vibrational modes of polar
nanosemiconductors.

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Judul Seri: APPLIED PHYSICS LETTERS
No. Panggil: -
Penerbit: New York : American Institute of Physics., 2006
Deskripsi Fisik: Appl. Phys. Lett. 89, 063112 (2006)
Bahasa: English
ISBN/ISSN: -
Klasifikasi: -
Tipe Isi: -
Tipe Media: -
Tipe Pembawa: -
Edisi: -
Subjek: FISIKA
Info Detail Spesifik: -
Pernyataan Tanggungjawab: agus

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Lack of dependence of the Raman frequency of optical vibrational modes on excitation wavelength in polar nanosemiconductors

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