Nuclear-Spin-Induced Oscillatory Current in Spin-Blockaded Quantum Dots
- 24 June 2004
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 92 (25), 256803
- https://doi.org/10.1103/physrevlett.92.256803
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 or . A possible mechanism for dynamically polarizing the nuclear spins is proposed.
Keywords
This publication has 23 references indexed in Scilit:
- Local control of dynamic nuclear polarization in quantum Hall devicesApplied Physics Letters, 2002
- Electrically Controlled Nuclear Spin Polarization and Relaxation by Quantum-Hall StatesPhysical Review Letters, 2002
- Gate-voltage control of spin interactions between electrons and nuclei in a semiconductorNature, 2002
- Longitudinal resistance anomaly around the 2/3 filling factor observed in a GaAs/AlGaAs single heterostructurePhysica B: Condensed Matter, 2001
- New Type of Electron Nuclear-Spin Interaction from Resistively Detected NMR in the Fractional Quantum Hall Effect RegimePhysical Review Letters, 1999
- New Resistance Maxima in the Fractional Quantum Hall Effect RegimePhysical Review Letters, 1998
- Dynamic nuclear polarization at the edge of a two-dimensional electron gasPhysical Review B, 1997
- Local Dynamic Nuclear Polarization Using Quantum Point ContactsPhysical Review Letters, 1994
- Magnetoquantum oscillations of the nuclear-spin-lattice relaxation near a two-dimensional electron gasPhysical Review Letters, 1990
- Electrical Detection of Nuclear Magnetic Resonance inHeterostructuresPhysical Review Letters, 1988