Physics – Condensed Matter – Materials Science
Scientific paper
2008-10-20
Journal of Magnetism and Magnetic Materials 320 (2008), pp. 3207-3228
Physics
Condensed Matter
Materials Science
Topical Review
Scientific paper
10.1016/j.jmmm.2008.08.060
We review the first decade of extensive optical studies of ferromagnetic, III-Mn-V diluted magnetic semiconductors. Mn introduces holes and local moments to the III-V host, which can result in carrier mediated ferromagnetism in these disordered semiconductors. Spectroscopic experiments provide direct access to the strength and nature of the exchange between holes and local moments; the degree of itineracy of the carriers; and the evolution of the states at the Fermi energy with doping. Taken together, diversity of optical methods reveal that Mn is an unconventional dopant, in that the metal to insulator transition is governed by the strength of the hybridization between Mn and its p-nictogen neighbor. The interplay between the optical, electronic and magnetic properties of III-Mn-V magnetic semiconductors is of fundamental interest and may enable future spin-optoelectronic devices.
Awschalom David D.
Basov Dimitri N.
Burch K. S.
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