| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Elimination of the Schottky Barrier at an Au-ZnSe Nanowire Nanocontact via in Situ Joule Heating |
| TAN Yu1, WANG Yan-Guo2** |
1Science College, Hunan Agricultural University, Changsha 410128
2Beijing Laboratory of Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, P. O. Box 603, Beijing 100190
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| Cite this article: |
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TAN Yu, WANG Yan-Guo 2013 Chin. Phys. Lett. 30 017902 |
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Abstract In order to improve electron transport, in situ Joule heating of an Au-ZnSe nanowire-Au (M-S-M) nanostructure is conducted inside transmission electron microscopy (TEM) until the Au metal is molten at the reversely biased Au-ZnSe nanowire (M-S) nanocontact. The observed microstructural evolution is responsible for the electron transport property changes, i.e. a nonlinear to linear transformation in the current-voltage (I–V) relationship was measured in situ before and after the Joule annealing. The linear characteristic in the I–V relationship confirms elimination of the Schottky barrier at the M-S nanocontact and formation of ohmic contacts. Consequently, electron transport at the M-S nanocontact can be significantly improved by the removal of the Schottky barrier via in situ Joule heating.
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Received: 05 September 2012
Published: 04 March 2013
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| PACS: |
79.70.+q
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(Field emission, ionization, evaporation, and desorption)
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68.37.Hk
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(Scanning electron microscopy (SEM) (including EBIC))
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81.07.De
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(Nanotubes)
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