Journal
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
Volume 20, Issue 6, Pages 409-411Publisher
SPRINGER
DOI: 10.1007/s10948-007-0242-7
Keywords
(Ga, Mn)As; Curie temperature; electric field-effect control of ferromagnetism; ferromagnetic semiconductor; p-d Zener model
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We have fabricated a series of field-effect transistor structures with a thin (Ga,Mn)As channel with thickness t of 3.5, 4.0, 4.5, and 5.0 nm, and investigated the effect of electric-field E on their magnetic properties. The Curie temperature T (C) showed a clear dependence on the magnitude of E, and its controllable range became larger with decreasing t and reached 15 K for the device with t=3.5 nm, which corresponded to 32% of T (C) of the layer.
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