Low Temperature Physics: 35, 53 (2009); https://doi.org/10.1063/1.3064909 (5 pages)
Физика Низких Температур: Том 35, Выпуск 1 (Январь 2009), c. 70-74    ( к оглавлению , назад )

On origin of room temperature ferromagnetism in wide gap semiconductors

Anna Korbecka and Jacek A. Majewski

Institute of Theoretical Physics & Interdisciplinary Center for Modeling of Materials University of Warsaw, ul. Hoza 69, 00-681 Warszawa, Poland
E-mail: Jacek.Majewski@fuw.edu.pl

Received August 13, 2008


The emerging field of semiconductor spintronics would be dramatically boosted if a semiconductor exhibiting room-temperature ferromagnetism could be found. Here, we discuss the recent stage of the research, paying particular attention to the understanding of observed room temperature ferromagnetism in wide band semiconductors, GaMnN and ZnMnO. Since the spinodal decomposition has been observed in these structures, we consider the possibilities to influence density fluctuations of the alloys to obtain ferromagnetic semiconductors with required functionalities. We contrast these compounds with (In,Mn)As and (Ga,Mn)As, where the ferromagnetism is well understood, albeit well below room temperature.

PACS: 75.50.Pp Magnetic semiconductors.

Key words: ferromagnetic semiconductors, diluted magnetic semiconductors, spinodal decomposition, wide band gap semiconductors.