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- Title
The synthesis and electrical transport of ligand-protected Au clusters.
- Authors
Wei, Zhongxia; Jiang, Wanrun; Bai, Zhanbin; Lian, Zhen; Wang, Zhigang; Song, Fengqi
- Abstract
The ligand-protected Au clusters have been synthesized by using meso-2,3-dimercaptosuccinic acid as the reducing and stabilizing agent. Transmission electron microscopic analysis shows a size distribution of 1.4 ± 0.6 nm. Optical spectrum shows an absorbance peak at 390 nm. The electrical transport measurement devices are fabricated using the electro-migration method. Coulomb blockade is observed at the temperature of 1.6 K, revealing the formation of the tunneling junction. The Coulomb oscillation's on/off ratio is nearly 5. Three peaks are extracted in the dI/ dV data and attributed to the energy levels of Au clusters, gapped by about 60 meV. First principle calculations are carried out to interpret the energy diagram. Graphical abstract:
- Subjects
LIGAND analysis; GOLD-plating; TRANSMISSION electron microscopy; OPTICAL spectra; ENERGY level diagrams
- Publication
European Physical Journal D (EPJ D), 2017, Vol 71, Issue 9, p1
- ISSN
1434-6060
- Publication type
Article
- DOI
10.1140/epjd/e2017-80040-y