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Electrical coherent control of nuclear spins in a breakdown regime of quantum Hall effect

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arxiv 0705.3547 v3 pith:X4OBTXG3 submitted 2007-05-24 cond-mat.mes-hall cond-mat.mtrl-sci

Electrical coherent control of nuclear spins in a breakdown regime of quantum Hall effect

H. Takahashi , M. Kawamura , S. Masubuchi , K. Hamaya , T. Machida , Y. Hashimoto , S. Katsumoto This is my paper
classification cond-mat.mes-hall cond-mat.mtrl-sci
keywords nuclearspinsquantumbreakdowncoherentcontroleffectelectrical
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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.

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