Journal
PHYSICAL REVIEW B
Volume 84, Issue 19, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.84.195470
Keywords
-
Funding
- National Natural Science Foundation of China [10974019, 11004010]
- Fundamental Research Funds for the Central Universities
Ask authors/readers for more resources
Using cryogenic scanning tunneling microscopy and scanning tunneling spectroscopy, single-electron tunneling of Au nanoparticles (NPs) with 1.4 nm in radius was studied. We observe a gap Delta V similar to 2e/C (C is the capacitance of the Au particle and e the charge of an electron) around zero bias in the tunneling-conductance spectrum, followed by a series of discrete single-electron tunneling peaks with peak spacing of E(C) similar to e/C at both negative and positive bias. Experimental data are well explained by taking into account both the shift of conductance peaks and the effect of exchange interaction of electrons on the single-electron tunneling of Au NPs. A conductance peak near zero bias was suppressed by the exchange-type zero-bias anomaly, which results in the gap Delta V similar to 2E(C). According to our experiment and analysis, the shift of conductance peaks of Au NPs is attributed to self-biased gate and/or tip-induced gate.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available