%0 Journal Article
%A Laref, A.
%A Sasioglu, E.
%A Galanakis, I.
%T Exchange interactions, spin waves, and Curie temperature in zincblende half-metallic sp-electron ferromagnets: the case of CaZ (Z = N, P, As, Sb)
%J Journal of physics / Condensed matter
%V 23
%@ 0953-8984
%C Bristol
%I IOP Publ.
%M PreJuSER-17870
%P 296001
%D 2011
%Z Record converted from VDB: 12.11.2012
%X Using first-principle calculations in conjunction with the frozen-magnon technique we have calculated the exchange interactions and spin-wave dispersions in the series of the zincblende half-metallic II-V (CaZ, Z = N, P, As, Sb) ferromagnets. The calculated exchange constants are used to estimate the Curie temperature within the random phase approximation. The large Stoner gap in these alloys gives rise to well-defined undamped spin waves throughout the Brillouin zone. Moreover we show that the spin-wave stiffness constants for the considered systems are among the largest available for local moment ferromagnets. The predicted Curie temperature of half-metallic CaN is noticeably higher than the room temperature with respect to the other compounds, and thus we propose CaN as a promising candidate for future applications in spintronic devices.
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%$ pmid:21705831
%U <Go to ISI:>//WOS:000292545200011
%R 10.1088/0953-8984/23/29/296001
%U https://juser.fz-juelich.de/record/17870