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

doi:10.1063/1.2778465

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

Mesoscale and Nanoscale Physics 2009-11-13 v3 Materials Science

Authors: H. Takahashi , M. Kawamura , S. Masubuchi , K. Hamaya , T. Machida , Y. Hashimoto , S. Katsumoto

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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.

Keywords

nuclear spins electrical coherent control quantum Hall effect breakdown regime AlGaAs/GaAs heterostructure dynamic nuclear polarization Rabi oscillations

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@article{arxiv.0705.3547,
  title  = {Electrical coherent control of nuclear spins in a breakdown regime of quantum Hall effect},
  author = {H. Takahashi and M. Kawamura and S. Masubuchi and K. Hamaya and T. Machida and Y. Hashimoto and S. Katsumoto},
  journal= {arXiv preprint arXiv:0705.3547},
  year   = {2009}
}

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3 pages, 4 figures

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

Abstract

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