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Single Hole Transport in a Silicon Metal-Oxide-Semiconductor Quantum Dot

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arxiv 1304.2871 v2 pith:XU3T4K3M submitted 2013-04-10 cond-mat.mes-hall

Single Hole Transport in a Silicon Metal-Oxide-Semiconductor Quantum Dot

classification cond-mat.mes-hall
keywords holemetal-oxide-semiconductorsiliconsingleadjacentarchitecturebiasingblockade
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We describe a planar silicon metal-oxide-semiconductor (MOS) based single hole transistor, which is compatible with conventional Si CMOS fabrication. A multi-layer gate design gives independent control of the carrier density in the dot and reservoirs. Clear Coulomb blockade oscillations are observed, and source-drain biasing measurements show that it is possible to deplete the dot down to the few hole regime, with excited states clearly visible. The architecture is sufficiently versatile that a second hole dot could be induced adjacent to the first one.

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