Ideal Discrete Energy Levels in Synthesized Au Nanoparticles for Chemically Assembled Single-Electron Transistors
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- 作者：Shinya Kano ; Yasuo Azuma ; Kosuke Maeda ; Daisuke Tanaka ; Masanori Sakamoto ; Toshiharu Teranishi ; Luke W. Smith ; Charles G. Smith ; Yutaka Majima
- 刊名：ACS Nano
- 出版年：2012
- 出版时间：November 27, 2012
- 年：2012
- 卷：6
- 期：11
- 页码：9972-9977
- 全文大小：401K
- 年卷期：v.6,no.11(November 27, 2012)
- ISSN：1936-086X
文摘
Ideal discrete energy levels in synthesized Au nanoparticles (6.2 卤 0.8 nm) for a chemically assembled single-electron transistor (SET) are demonstrated at 300 mK. The spatial structure of the double-gate SET is determined by two gate and drain voltages dependence of the stability diagram, and electron transport to the Coulomb box of a single, nearby Coulomb island of Au nanoparticles is detected by the SET. The SET exhibits discrete energy levels, and the excited energy level spacing of the Coulomb island is evaluated as 0.73 meV, which well corresponds to the expected theoretical value. The discrete energy levels show magnetic field evolution with the Zeeman effect and dependence on the odd鈥揺ven electron number of a single Au nanoparticle.