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20 August 2020 Germanium: a semiconducting platform for spin-orbitronics
Thomas Guillet, Carlo Zucchetti, Adele Marchionni, Quentin Barbedienne, Ali Hallal, Alain Marty, Céline Vergnaud, Giovanni Isella, Henri Jaffrès, Nicolas Reyren, Jean-Marie George, Mair Chshiev, Marco Finazzi, Franco Ciccacci, Paolo Biagioni, Aurélien Masseboeuf, Hanako Okuno, Federico Bottegoni, Albert Fert, Matthieu Jamet
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Proceedings Volume 11470, Spintronics XIII; 114702Q (2020) https://doi.org/10.1117/12.2567222
Event: SPIE Nanoscience + Engineering, 2020, Online Only
Abstract
Germanium is a very good candidate to host a versatile spintronics platform thanks to its unique spin and optical properties. Recently we focused on two approaches in order to tune the spin-orbit interaction (SOI) in this Ge-based platform. The first one relies on growing high quality epitaxial topological insulators (TIs) on a Ge (111) substrate, we developed an original method to probe the spin-to-charge conversion at the TI/Ge(111) interface by taking advantage of the Ge optical properties. The latter approach is to exploit the intrinsic SOI of Ge (111). By investigating the electrical properties of a thin Ge(111), we found a large unidirectional Rashba magnetoresistance, which we ascribe to the interplay between the externally applied magnetic field and the current-induced pseudo-magnetic field applied in the spin-splitted subsurface states of Ge (111). Both studies open a door towards spin manipulation with electric fields in an all-semiconductor technology platform.
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Thomas Guillet, Carlo Zucchetti, Adele Marchionni, Quentin Barbedienne, Ali Hallal, Alain Marty, Céline Vergnaud, Giovanni Isella, Henri Jaffrès, Nicolas Reyren, Jean-Marie George, Mair Chshiev, Marco Finazzi, Franco Ciccacci, Paolo Biagioni, Aurélien Masseboeuf, Hanako Okuno, Federico Bottegoni, Albert Fert, and Matthieu Jamet "Germanium: a semiconducting platform for spin-orbitronics", Proc. SPIE 11470, Spintronics XIII, 114702Q (20 August 2020); https://doi.org/10.1117/12.2567222
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KEYWORDS
Germanium
Semiconductors
Optical properties
Dielectrics
Magnetism
Nanotechnology
Silicon
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