PMID: 15245046Jul 13, 2004Paper

Nuclear-spin-induced oscillatory current in spin-blockaded quantum dots

Physical Review Letters
K Ono, Seigo Tarucha

Abstract

We show experimentally that electron transport through GaAs-based double quantum dots can be affected by ambient nuclear spin states in a certain regime where transport is blocked in the absence of electron spin flip. Current through the dots oscillates in time with a period up to 200 s depending on magnetic field. Oscillation is quenched by application of a continuous wave ac magnetic field which can induce nuclear magnetic resonance in 71Ga or 69Ga. A possible mechanism for dynamically polarizing the nuclear spins is proposed.

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Citations

Jun 10, 2005·Nature·A C JohnsonA C Gossard
Jun 6, 2009·Science·Jan Fischer, Daniel Loss
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