Spins...free of charge

Henry M. van Driel; Yaser Kerachian; Beata Derkowska; Ravi D. Bhat; John E. Sipe; Martin Stevens; Arthur L. Smirl

doi:10.1117/12.527098

16 June 2004 Spins...free of charge

Henry M. van Driel, Yaser Kerachian, Beata Derkowska, Ravi D. Bhat, John E. Sipe, Martin Stevens, Arthur L. Smirl

Proceedings Volume 5352, Ultrafast Phenomena in Semiconductors and Nanostructure Materials VIII; (2004) https://doi.org/10.1117/12.527098
Event: Integrated Optoelectronic Devices 2004, 2004, San Jose, CA, United States

Abstract

Quantum interference of single and two photon absorption pathways connecting valence and conduction band states in a semiconductor allow one to generate spin currents with or without charge currents. The underlying principles for these generation processes are outlines. We offer experimental demonstration of pure spin currents in GaAs using two color beams configured collinearly to produce spatially homogeneous currents, or non-collinearly to produce spin current gratings.

Citation Download Citation

Henry M. van Driel, Yaser Kerachian, Beata Derkowska, Ravi D. Bhat, John E. Sipe, Martin Stevens, and Arthur L. Smirl "Spins...free of charge", Proc. SPIE 5352, Ultrafast Phenomena in Semiconductors and Nanostructure Materials VIII, (16 June 2004); https://doi.org/10.1117/12.527098

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