Laser-Induced Fano Resonance Scattering in Silicon Nanowires
Publication type: Journal Article
Publication date: 2003-04-09
scimago Q1
wos Q1
SJR: 2.967
CiteScore: 14.9
Impact factor: 9.1
ISSN: 15306984, 15306992
General Chemistry
Condensed Matter Physics
General Materials Science
Mechanical Engineering
Bioengineering
Abstract
We have studied the impact of excitation laser power density on the Raman spectrum of small-diameter (5−15 nm) silicon nanowires. At low power densities, a Lorentzian line is observed at 520 cm-1, the same value as that of the zone center LO (TO) phonon in bulk silicon. With increasing laser illumination, the Raman band downshifts and asymmetrically broadens on the low-frequency side. Our results contradict the traditionally accepted notion that a downshifted and asymmetrically broadened line in Si nanowires is due to quantum confinement effects. Rather, we suggest that the downshifting can be due to a laser heating effect of the nanowire and that the asymmetric line shape is due to a Fano interference between scattering from the k = 0 optic phonon and electronic continuum scattering from laser-induced electrons in the conduction band.
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201
Total citations:
201
Citations from 2025:
10
(4.98%)
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GOST
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Gupta R. K. et al. Laser-Induced Fano Resonance Scattering in Silicon Nanowires // Nano Letters. 2003. Vol. 3. No. 5. pp. 627-631.
GOST all authors (up to 50)
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Gupta R. K., Xiong Q., Adu C. K., Kim U., Eklund P. C. Laser-Induced Fano Resonance Scattering in Silicon Nanowires // Nano Letters. 2003. Vol. 3. No. 5. pp. 627-631.
Cite this
RIS
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TY - JOUR
DO - 10.1021/nl0341133
UR - https://doi.org/10.1021/nl0341133
TI - Laser-Induced Fano Resonance Scattering in Silicon Nanowires
T2 - Nano Letters
AU - Gupta, Raju Kumar
AU - Xiong, Qihua
AU - Adu, C. K.
AU - Kim, U.-J.
AU - Eklund, P. C.
PY - 2003
DA - 2003/04/09
PB - American Chemical Society (ACS)
SP - 627-631
IS - 5
VL - 3
SN - 1530-6984
SN - 1530-6992
ER -
Cite this
BibTex (up to 50 authors)
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@article{2003_Gupta,
author = {Raju Kumar Gupta and Qihua Xiong and C. K. Adu and U.-J. Kim and P. C. Eklund},
title = {Laser-Induced Fano Resonance Scattering in Silicon Nanowires},
journal = {Nano Letters},
year = {2003},
volume = {3},
publisher = {American Chemical Society (ACS)},
month = {apr},
url = {https://doi.org/10.1021/nl0341133},
number = {5},
pages = {627--631},
doi = {10.1021/nl0341133}
}
Cite this
MLA
Copy
Gupta, Raju Kumar, et al. “Laser-Induced Fano Resonance Scattering in Silicon Nanowires.” Nano Letters, vol. 3, no. 5, Apr. 2003, pp. 627-631. https://doi.org/10.1021/nl0341133.