2001
DOI: 10.1103/physrevb.63.085201
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Carrier-induced ferromagnetism inpZn1xMnxTe

Abstract: We present a systematic study of the ferromagnetic transition induced by the holes in nitrogen doped Zn 1Ϫx Mn x Te epitaxial layers, with particular emphasis on the values of the Curie-Weiss temperature as a function of the carrier and spin concentrations. The data are obtained from thorough analyses of the results of magnetization, magnetoresistance, and spin-dependent Hall effect measurements. The experimental findings compare favorably, without adjustable parameters, with the prediction of the Rudermann-Ki… Show more

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Cited by 243 publications
(234 citation statements)
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“…Here, the magnetic impurities are not electrically active. However, they can effectively modify electronic transport [4,5] and magnetism [6,7] due to exchange coupling of the free carriers spins to the spins of magnetic atoms . As a result, scattering of the free carriers by the localized magnetic moments determines their mobility that is substantially spin and, therefore, magnetic-field dependent.…”
Section: Introductionmentioning
confidence: 99%
“…Here, the magnetic impurities are not electrically active. However, they can effectively modify electronic transport [4,5] and magnetism [6,7] due to exchange coupling of the free carriers spins to the spins of magnetic atoms . As a result, scattering of the free carriers by the localized magnetic moments determines their mobility that is substantially spin and, therefore, magnetic-field dependent.…”
Section: Introductionmentioning
confidence: 99%
“…Hole-induced ferromagnetism has been observed already in III-V DMS layers of GaMnAs [3] and InMnAs [4,5] as well as in II-VI heterostructures (CdMnTe QW [6], ZnMnTe layers [7]). …”
mentioning
confidence: 99%
“…La confrontation des spectres magnéto-optiques et des mesures d'aimantation permet d'évaluer précisément les paramètres de couplage caractérisant l'effet Zeeman géant dans chaque bande pour les différents semi-conducteurs magnétiques dilués ; ceci fait en retour de la spectroscopie magnéto-optique une mesure locale et très sensible de l'aimantation des spins Mn. magnétique à cause des interactions directes entre Mn) devient ferromagnétique lorsqu'on la dope de type p [2] : la susceptibilité mesurée dans la phase paramagnétique diverge à température finie (figure 3a), et en dessous de cette température une hystérésis apparaît sur les cycles d'aimantation (figure 3b). Il faut noter que cette hystéré-sis apparaît également sur des propriétés des porteurs du semi-conducteur (l'effet Hall, voir figure 3c), ce qui appuie l'idée que le caractère ferromagnétique est une propriété du système couplé spins + porteurs.…”
Section: Spectroscopie Magnéto-optiqueunclassified