title: Transition temperature of ferromagnetic semiconductors: a dynamical mean field study.
abstract: We formulate a theory of doped magnetic semiconductors such as Ga(1-x)Mn(x)As which have attracted recent attention for their possible use in spintronic applications. We solve the theory in the dynamical mean field approximation to find the magnetic transition temperature T(c) as a function of magnetic coupling strength J, carrier density n, and Mn density x. We find that T(c) is determined by a subtle interplay between carrier density and magnetic coupling.
authors.affiliation: IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, USA.
authors.forename: A
authors.initials: A
authors.lastname: Chattopadhyay
authors.forename: S
authors.initials: S
authors.lastname: Das Sarma
authors.forename: A J
authors.initials: AJ
authors.lastname: Millis