Coherent manipulation of nuclear spins in the breakdown regime of integer quantum Hall states
arXiv:0808.4021 · doi:10.1088/1742-6596/150/2/022034
Abstract
We demonstrate a new method for electrical manipulation of nuclear spins utilizing dynamic nuclear polarization induced by quantum Hall effect breakdown. Nuclear spins are polarized and detected through the hyperfine interaction between a nuclear spin system and a two-dimensional electron system located at an interface of GaAs/AlGaAs single heterostructure. Coherent oscillations between the nuclear-spin quantum states are observed by measuring the longitudinal voltage of the conductor.
4 pages, 2 figures