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Proceedings Paper

Spin dependent transport properties in spin-LEDs: a survey
Author(s): Pol Van Dorpe; Wim Van Roy; Jo De Boeck; Gustaaf Borghs
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Paper Abstract

Optical characterization is a powerful tool for assessment of spin-injection properties in spin-LEDs. We show a comparison of spin-dependent transport properties in LEDs with different spin-injector structures including ferromagnet/tunnel-barrier or Schottky-barrier injectors and magnetic semiconductors. Using these devices, room temperature spin-injection and voltage-controlled injection has been achieved. The optical technique used is the Oblique Hanle Effect. Features such as spin-nuclear interactions can be clearly demonstrated in such spin-LED structures. Finally we discuss the design of a spin-dependent contact that can supply both electrical spin injection as electrical spin detection.

Paper Details

Date Published: 25 March 2005
PDF: 12 pages
Proc. SPIE 5732, Quantum Sensing and Nanophotonic Devices II, (25 March 2005); doi: 10.1117/12.582683
Show Author Affiliations
Pol Van Dorpe, IMEC (Belgium)
Wim Van Roy, IMEC (Belgium)
Jo De Boeck, IMEC (Belgium)
Gustaaf Borghs, IMEC (Belgium)

Published in SPIE Proceedings Vol. 5732:
Quantum Sensing and Nanophotonic Devices II
Manijeh Razeghi; Gail J. Brown, Editor(s)

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