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Physical Review B
We investigate half-metallicity in  stacked (CrAs)_n/(GaAs)_n heterostructures with n ≤ 3 by means of a combined many-body and electronic structure calculation. Interface states in the presence of strong electronic correlations are discussed for the case n=1. For n=2,3 our results indicate that the minority spin half-metallic gap is suppressed by local correlations at finite temperatures, and continuously shrinks upon increasing the heterostructure period. Although around room temperaturedoi:10.1103/physrevb.83.035307 fatcat:wyp4ekeha5cr7ehxpjvgsjolwq