Ferromagnetic Semiconductors: Moving Beyond (Ga,Mn)As

Details Ferromagnetic Semiconductors: Moving Beyond (Ga,Mn)As Ferromagnetic Semiconductors: Moving Beyond (Ga,Mn)As

2005-03-08

arxiv.org/abs/cond-mat/0503185v1

Nature Materials 4, 195-202 (2005)

Physics

Condensed Matter

Materials Science

37 pages, 4 figures

Scientific paper

The recent development of MBE techniques for growth of III-V ferromagnetic semiconductors has created materials with exceptional promise in spintronics, i.e. electronics that exploit carrier spin polarization. Among the most carefully studied of these materials is (Ga,Mn)As, in which meticulous optimization of growth techniques has led to reproducible materials properties and ferromagnetic transition temperatures well above 150 K. We review progress in the understanding of this particular material and efforts to address ferromagnetic semiconductors as a class. We then discuss proposals for how these materials might find applications in spintronics. Finally, we propose criteria that can be used to judge the potential utility of newly discovered ferromagnetic semiconductors, and we suggest guidelines that may be helpful in shaping the search for the ideal material.

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