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Electronics 2016, 5(4), 80; doi:10.3390/electronics5040080

Optical Orientation and Inverse Spin Hall Effect as Effective Tools to Investigate Spin-Dependent Diffusion

1
Dipartimento di Fisica and LNESS, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
2
Istituto di Fotonica e Nanotecnologie - Centro Nazionale delle Ricerche, LNESS, via Anzani 42, 22100 Como, Italy
3
Université Grenoble Alpes, Institut Nanosciences et Cryogénie (INAC) - Spintec, F-38000 Grenoble, France
4
Commissariat à l’énergie atomique et aux énergies alternatives (CEA), Institut Nanosciences et Cryogénie (INAC) - Spintec, F-38054 Grenoble, France
*
Author to whom correspondence should be addressed.
Academic Editors: Matteo Cantoni, Riccardo Bertacco and Christian Rinaldi
Received: 1 October 2016 / Revised: 15 November 2016 / Accepted: 17 November 2016 / Published: 22 November 2016
(This article belongs to the Special Issue Spin Optoelectronics)
View Full-Text   |   Download PDF [352 KB, uploaded 22 November 2016]   |  

Abstract

In this work we address optical orientation, a process consisting in the excitation of spin polarized electrons across the gap of a semiconductor. We show that the combination of optical orientation with spin-dependent scattering leading to the inverse spin-Hall effect, i.e., to the conversion of a spin current into an electrical signal, represents a powerful tool to generate and detect spin currents in solids. We consider a few examples where these two phenomena together allow addressing the spin-dependent transport properties across homogeneous samples or metal/semiconductor Schottky junctions. View Full-Text
Keywords: optical orientation; spin current; inverse spin Hall effect optical orientation; spin current; inverse spin Hall effect
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Finazzi, M.; Bottegoni, F.; Zucchetti, C.; Bollani, M.; Ballabio, A.; Frigerio, J.; Rortais, F.; Vergnaud, C.; Marty, A.; Jamet, M.; Isella, G.; Ciccacci, F. Optical Orientation and Inverse Spin Hall Effect as Effective Tools to Investigate Spin-Dependent Diffusion. Electronics 2016, 5, 80.

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