Optically-patterned nuclear doughnuts in GaAs/MnAs heterostructures
arXiv:cond-mat/0404244 · doi:10.1063/1.1781743
Abstract
We demonstrate a scheme for optically patterning nuclear spin polarization in semiconductor/ferromagnet heterostructures. A scanning time-resolved Kerr rotation microscope is used to image the nuclear spin polarization that results when GaAs/MnAs epilayers are illuminated with a focused laser having a Gaussian profile. Rather than tracking the intensity profile of the laser spot, these images reveal that the nuclear polarization forms an annular lateral structure having circular symmetry with a dip rather than a peak at its center.
11 pages, 3 figures
References in corpus (5)
- Spin-polarized Zener tunneling in (Ga,Mn)As
- Spontaneous Spin Coherence in n-GaAs Produced by Ferromagnetic Proximity Polarization
- Nuclear spin relaxation probed by a single quantum dot
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Cited by in corpus (4)
- Nuclear spin diffusion in semiconductor nanostructures: Effects of inhomogeneous hyperfine interactions
- Electron spin interferometry using a semiconductor ring structure
- Electron Spin Dynamics and Hyperfine Interactions in Fe/Al_0.1Ga_0.9As/GaAs Spin Injection Heterostructures
- Nanoscale engineering and dynamical stabilization of mesoscopic spin textures