Gautam, Ujjal K. ; Gundiah, Gautam ; Kulkarni, G. U. (2005) Scanning tunneling microscopy and spectroscopy of Se and Te nanorods Solid State Communications, 136 (3). pp. 169-172. ISSN 0038-1098
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.ssc.2005.06.029
Abstract
Se and Te nanorods obtained by a self-seeding solution growth process have been examined by scanning tunneling microscopy and spectroscopy (STM/STS). The diameters of the rods, as revealed by STM images were in the range of 10–60 nm, with aspect ratios of 10–20. The I–V data of the Se and Te nanorods exhibit band gaps of ∼1.3 and ∼0.4 eV, respectively, nearly independent of the diameter, and these values are close to the bulk values of Se and Te. In both the cases, the nanorods possess a small but finite conductance even in the band gap regions, the conductance value increasing with the diameter of the rod. A tunneling mechanism involving the surface states is proposed to explain this phenomenon.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Nanostructures; Scanning Tunneling Microscopy and Spectroscopy; Electronic Transport |
| ID Code: | 103172 |
| Deposited On: | 06 Mar 2017 12:30 |
| Last Modified: | 06 Mar 2017 12:30 |
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