Anisotropy of electron-phonon coupling in single wurtzite CdS nanowires

被引：44

作者：

Fan, H. M.

Ni, Z. H.

Feng, Y. P.

Fan, X. F.

Kuo, J. L.

Shen, Z. X.

Zou, B. S.

机构：

[1] Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore

[2] Nanyang Technol Univ, Div Phys & Appl Phys, Sch Math & Phys Sci, Singapore 637371, Singapore

[3] Hunan Univ, Micronano Technol Res Ctr, Changsha 410082, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 17期

关键词：

D O I：

10.1063/1.2805380

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Orientation dependent electron phonon (EP) coupling on single wurtzite CdS nanowires with average diameter of 60 nm has been studied using polarized Raman spectroscopy. The Raman spectra of nanowires are compared with those of bulk ribbon. Different from the bulk sample, the EP coupling of the nanowires is polarized along the longitudinal axis of wire and the diametral coupling strength exhibits a minimum due to the finite size effect of the Frohlich potential. These results show that the highly anisotropic geometry of CdS nanowires is a dominant factor in determining the anisotropy of EP coupling. (C) 2007 American Institute of Physics.

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页数：3

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