Journal
APPLIED PHYSICS LETTERS
Volume 88, Issue 12, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2186984
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A hybrid nanostructure of diluted magnetic semiconductor quantum well (DMS-QW) has been fabricated by using a ferromagnetic Co/Pt-multilayered film with perpendicular magnetization. The nanoscale disk of DMS-QW with a diameter of 80 nm was embedded in the magnetic film generating magnetic fields perpendicular to the DMS-QW plane. As a result, exciton photoluminescence with circular-polarization properties arises in a zero external field, due to the giant Zeeman effects of excitons. It indicates that the perpendicular magnetic fields applied from the Co/Pt film align the exciton spins in the DMS nanoscale disk, acting as a nanoscale magnet for semiconductor spintronics. (c) 2006 American Institute of Physics.
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