Berry Phase in single crystals of the dilute magnetic semiconductor (Cd₀.₇Zn₀.₂₈Mn₀.₀₂)₃As₂H) oscillations, observed in the temperature range T = 4.2 ÷ 30 K and at transverse magnetic field B = 0 ÷ 11
T Transport evidence of mass-less Dirac fermions in (Cd₁-x-yZnxMny)₃As₂ (x+y=0.4).1nm-1, the charge carriers relaxation time due to dispersion
tD =1.8×10-¹³ s, the velocity of charge