Current Fluctuations in a Semiconductor Quantum Dot with Large Energy Spacing
JEONG Heejun**
Department of Applied Physics, Hanyang University, Ansan 426-791, Korea
Abstract ：We report on the measurements of the current noise properties of electron tunneling through a split-gate GaAs quantum dot with large energy level spacing and a small number of electrons. Shot noise is full Poissonian or suppressed in the Coulomb-blockaded regime, while it is enhanced to show as super-Poissonian when an excited energy level is involved by finite source-drain bias. The results can be explained by multiple Poissonian processes through multilevel sequential tunneling.
出版日期: 2015-01-12
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2014, Vol. 31 
