By Topic

Damping of surface acoustic vibration induced by electrons trapped on SnO2 nanocrystal surface

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $31
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

6 Author(s)
Gao, F. ; Department of Physics, National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, People''s Republic of China ; Li, T.H. ; Wu, X.L. ; Cheng, Y.C.
more authors

Your organization might have access to this article on the publisher's site. To check, click on this link: 

Broad full widths of half maxima (dampings) are observed from the low-frequency Raman spectra of hydrothermally prepared SnO2 nanocrystal congeries. No matrix exists between these nanocrystals and the complex-frequency model is thus unable to explain the damping in the low-frequency Raman peaks. An alternative model in which damping is induced by the interaction between confined surface acoustic vibrations and localized electrons near the nanocrystal surface is proposed to explain the phenomenon. This model which suggests that damping is proportional to d-3/2, where d is the average diameter of nanocrystals, is corroborated by our experimental results.

Published in:

Applied Physics Letters  (Volume:95 ,  Issue: 21 )