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http://hdl.handle.net/2289/8486| Title: | Evidence for surface states in ZnO nanostructures using non-linear optical spectroscopy |
| Authors: | Benoy, A Martin, Eglewogbe Ramakrishna, Podila Philip, Reji Rao, Apparao |
| Issue Date: | Mar-2012 |
| Publisher: | APS March Meeting, 2012 |
| Citation: | American Physical Society, 2012, Vol.57, A28.009 |
| Abstract: | An unexpected presence of ferromagnetic (FM) ordering in nanostructured ZnO has been reported previously. Recently, from our detailed magnetization studies and \textit{ab initio} calculations, we attributed this FM ordering in nanostructured ZnO to the presence of surface states, and a direct correlation between the magnetic properties and crystallinity of ZnO was observed. Such defect induced surface states appear as green/yellow emission in the photoluminescence spectrum of ZnO nanostructures. In this study, through a systematic sample preparation of both pristine and Co-doped ZnO nanostructures, and detailed PL and nonlinear optical measurements, we confirm that the observed FM ordering is due to the presence of surface states. |
| Description: | Open Access. |
| URI: | http://hdl.handle.net/2289/8486 |
| Alternative Location: | http://arxiv.org/abs/ http://dx.doi.org/ |
| Copyright: | 2012, APS |
| Appears in Collections: | Research Papers (LAMP) |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 2012_APS March Meeting_A28.009.pdf Restricted Access | 85.56 kB | Adobe PDF | View/Open Request a copy |
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