Donor-Based Single Electron Pumps with Tunable Donor Binding Energy
Nano Letters2012Vol. 12(2), pp. 763–768
Citations Over TimeTop 10% of 2012 papers
Abstract
We report on single electron pumping via a tunable number of individual donors. We use a device that essentially consists of a silicon nanowire with local arsenic implantation between a set of fine gates. A temperature-dependent characterization of the pumped current allows us to extract the ionization energy of a single arsenic donor. We observe the ionization energy to be tunable by the gate electric field over a large range of energies.
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