# Efficient conversion of light to charge and spin in Hall-bar microdevice

13 May 2016 Nádvorník L. Haigh J. A. Olejník K. Irvine A. C. Novák V. Jungwirth T. Wunderlich J.

We report an experimental demonstration of a local amplification of the spin Hall voltage using an expanding depletion zone at a pn-junction in GaAs/AlGaAs Hall-bar microdevices. It is demonstrated that the depletion zone can be spatially expanded by applying reverse bias by at least 10~$\mu$m at low temperature... (read more)

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• MESOSCALE AND NANOSCALE PHYSICS