Donor-based single electron pumps with tunable donor binding energy.
basic_science · Level V
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- Record sourced from PubMed, PMID 22268954.
- Also identified by DOI 10.1021/nl203709d.
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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.
Medical subject headings
- Arsenic
- Electrons
- Nanowires
- Silicon
- Thermodynamics