Transverse magnetic focussing of heavy holes in a (100) GaAs quantum well
Rendell, M., Klochan, O., Srinivasan, A. et al. (3 more authors)
(2015)
Transverse magnetic focussing of heavy holes in a (100) GaAs quantum well.
Semiconductor Science and Technology, 30 (10).
ISSN 0268-1242
Abstract
We perform magnetic focussing of high mobility holes confined in a shallow GaAs/Al0.33Ga0.67As quantum well grown on a (100) GaAs substrate. We observe ballistic focussing of holes over a path length of up to 4.9 μm with a large number of focussing peaks. We show that additional structure on the focussing peaks can be caused by a combination of the finite width of the injector quantum point contact and Shubnikov-de Haas oscillations. These results pave the way to studies of spin-dependent magnetic focussing and spin relaxation lengths in two-dimentional hole systems without complications of crystal anisotropies and anisotropic g-tensors.
Metadata
Authors/Creators:
Rendell, M.
Klochan, O.
Srinivasan, A.
Farrer, I.
Ritchie, D.A.
Hamilton, A.R.
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