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Proceedings Paper

Spin-resolved study of direct band-gap recombination in bulk Ge
Author(s): Fabio Pezzoli; Anna Giorgioni; Giovanni Isella; Sebastiano De Cesari; Emanuele Grilli; Mario Guzzi
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Paper Abstract

Recent investigations have demonstrated how temperature and doping can be employed as effective turning knobs to fully control the angular momentum of the photons emitted at the direct gap recombination of carriers with optically oriented spin in bulk Germanium. Here we emphasize how cooling of hot electrons via Coulomb collisions and intervalley scattering affect spin distribution within the conduction band, and explore the role of an additional degree of freedom, namely the excitation power density, in contributing to the electron spin relaxation.

Paper Details

Date Published: 28 August 2014
PDF: 6 pages
Proc. SPIE 9167, Spintronics VII, 91670H (28 August 2014); doi: 10.1117/12.2061795
Show Author Affiliations
Fabio Pezzoli, Univ. degli Studi di Milano-Bicocca (Italy)
Anna Giorgioni, Univ. degli Studi di Milano-Bicocca (Italy)
Giovanni Isella, Politecnico di Milano (Italy)
Sebastiano De Cesari, Univ. degli Studi di Milano-Bicocca (Italy)
Emanuele Grilli, Univ. degli Studi di Milano-Bicocca (Italy)
Mario Guzzi, Univ. degli Studi di Milano-Bicocca (Italy)

Published in SPIE Proceedings Vol. 9167:
Spintronics VII
Henri-Jean Drouhin; Jean-Eric Wegrowe; Manijeh Razeghi, Editor(s)

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