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Proceedings Paper

Spin-photonic devices based on crystalline-AlOx / GaAs for emission and detection of circular polarized light
Author(s): H. Munekata; M. Aoyama; R. Roca; K. Nishibayashi; N. Nishizawa
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Paper Abstract

In 2014, we were able to report 1-kHz, electrical helicity switching of circular polarization (CP) at low temperatures using dual-electrode spin-LEDs [1] and detection of CP up to RT by operating reversely the spin-LEDs [2]. Those LEDs consisted of n-AlGaAs/undoped-InGaAs/p-AlGaAs double heterojunctions and newly developed crystalline γ-like AlOx (x-AlOx) tunnel barriers [3]. Presented here are progresses made in the period 2014-2015, including 1-MHz helicity switching, a high CP value of PEL = 0.12 at RT, and development of a phenomenological model for spin photodiode (PD), all of which are important towards the realization of spin-photonic devices.

Paper Details

Date Published: 8 September 2015
PDF: 6 pages
Proc. SPIE 9551, Spintronics VIII, 955120 (8 September 2015); doi: 10.1117/12.2187003
Show Author Affiliations
H. Munekata, Tokyo Institute of Technology (Japan)
M. Aoyama, Tokyo Institute of Technology (Japan)
R. Roca, Tokyo Institute of Technology (Japan)
K. Nishibayashi, Tokyo Institute of Technology (Japan)
N. Nishizawa, Tokyo Institute of Technology (Japan)

Published in SPIE Proceedings Vol. 9551:
Spintronics VIII
Henri-Jean Drouhin; Jean-Eric Wegrowe; Manijeh Razeghi, Editor(s)

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