| Electrical coherent control of nuclear spins in a breakdown regime of quantum Hall effect (2007) | |||||||||
Abstract | |||||||||
| Using a conventional Hall-bar geometry with a micro-metal strip on top of the surface, we demonstrate an electrical coherent control of nuclear spins in an AlGaAs/GaAs semiconductor heterostructure. A breakdown of integer quantum Hall (QH) effect is utilized to dynamically polarize nuclear spins. By applying a pulse rf magnetic field with the metal strip, the quantum state of the nuclear spins shows Rabi oscillations, which is detected by measuring longitudinal voltage of the QH conductor.. Comment: 3 pages, 4 figures | |||||||||
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