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We present a systematic study of the ferromagnetic transition induced by theholes in nitrogen doped Zn1-xMnxTe epitaxial layers, with particular emphasison the values of the Curie-Weiss temperature as a function of the carrier andspin concentrations. The data are obtained from thorough analyses of theresults of magnetization, magnetoresistance and spin-dependent Hall effectmeasurements. The experimental findings compare favorably, without adjustableparameters, with the prediction of the Rudermann-Kittel-Kasuya-Yosida (RKKY)model or its continuous-medium limit, that is, the Zener model, provided thatthe presence of the competing antiferromagnetic spin-spin superexchangeinteraction is taken into account, and the complex structure of the valenceband is properly incorporated into the calculation of the spin susceptibilityof the hole liquid. In general terms, the findings demonstrate how theinterplay between the ferromagnetic RKKY interaction, carrier localization, andintrinsic antiferromagnetic superexchange affects the ordering temperature andthe saturation value of magnetization in magnetically and electrostaticallydisordered systems.Comment: 14 pages, 10 figure

physical review. b, condensed matter

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Carrier-induced ferromagnetism inp−Zn1−xMnxTe