Resonant acceptor states in diluted magnetic semiconductor (Cd sub(1-x-y)Zn sub(x)Mn sub(y)) sub(3)As sub(2)

Measurements of the Shubnikov-de Haas effect in (Cd sub(1-x-y)Zn sub(x)Mn sub(y)) sub(3)As sub(2) are reported, showing the presence of two narrow acceptor bands resonant with the conduction band. The energies of the acceptor bands, E sub(A1) approximately 0.22 eV and E sub(A2) approximately 0.29 eV, their widths, D sub(1) approximately 15 meV and D sub(2) approximately 10 meV, and the values of the density of states, g sub(A1)(E sub(A1)) approximately 4.1x10 super(19) eV super(-1) cm super(-3) and g sub(A2)(E sub(A2)) approximately 6.3x10 super(19) eV super(-1) cm super(-3), are determined.