Detection of anomalous Hall voltages in ultrahigh-mobility two-dimensional hole gases generated by optical spin orientation

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Vasyukov, D.A. ; Plaut, A.S. ; Henini, M. ; Pfeiffer, L.N. ; West, K.W. ; Nicoll, C.A. ; Farrer, I. ; Ritchie, D.A. (2015)

By combining optical spin orientation and an externally applied longitudinal electric field, transverse charge accumulation has been detected in very high-mobility two-dimensional hole gases by measuring the transverse voltage drop across simple Hall devices. Our results indicate intrinsic band-structure (rather than extrinsic skew scattering) derived spin-orbit coupling as the underlying mechanism of this spin-polarized transport effect. This work was supported by the EPSRC. This is the author accepted manuscript. The final version was first published by APS at http://journals.aps.org/prb/abstract/10.1103/PhysRevB.91.201406.
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