Artificial impurities in quantum wires and dots

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EditorSearch for: Ferry, David K.; Search for: Grubin, Harold L.; Search for: Jacoboni, Carlo; Search for: Jauho, Anti-Pekka
Proceedings titleQuantum Transport in Ultrasmall Devices
Series titleNATO ASI SERIES; no. B342
ConferenceProceedings of a NATO Advanced Study Institute on Quantum Transport in Ultrasmall Devices: July 17-30, 1994, II Ciocco, Lucca (Italy)
Pages133140; # of pages: 8
AbstractOne of the most common procedures employed in the fabrication of semiconductor nanostructures is the split-gate technique, first developed by (1986). Submicron metallic gates are deposited on top of the semiconductor crystal [usually about 90 nm above the two dimensional electron gas (2DEG)] and are used to electrostatically define the nanostructure. Electrical contact is easily made to these ‘top’ gates in a region away from the nanostructure where they can be widened enough to accommodate the connecting wire. This technique allows important experimental parameters (such as potential barrier heights) to be controlled by varying the applied gate voltage. It has led to the observation of several novel effects including the quantization of the conductance of quantum point contacts (Wharam et al., 1988; van Wees et al., 1988). Recently we have added a new element to the split gate technology, i.e. the ability to contact ‘isolated’ submicron gates (or alternatively isolated ohmic contacts) (Feng et al., 1993).
Publication date
PublisherPlenum Press
International Consortium of official NATIO ASI SERIES publishers
AffiliationNational Research Council Canada; NRC Institute for Microstructural Sciences
Peer reviewedNo
NPARC number12339344
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Record identifier51c2a030-fe8a-412f-b7d2-7100a9bd257d
Record created2009-09-11
Record modified2016-05-09
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