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In order to explain the absence of hysteresis in ferromagnetic p-type(Cd,Mn)Te quantum wells (QWs), spin dynamics was previously investigated byMonte Carlo simulations combining the Metropolis algorithm with thedetermination of hole eigenfunctions at each Monte Carlo sweep. Short-rangeantiferromagnetic superexchange interactions between Mn spins - which competewith the hole-mediated long-range ferromagnetic coupling - were found toaccelerate magnetization dynamics if the the layer containing Mn spins is widerthan the vertical range of the hole wave function. Employing this approach itis shown here that appreciate magnitudes of remanence and coercivity can beobtained if Mn ions are introduced to the quantum well in a delta-like fashion.

Reducing influence of antiferromagnetic interactions on ferromagnetic properties of p-(Cd,Mn)Te quantum wells