TY  - JOUR
AU  - Laref, A.
AU  - Sasioglu, E.
AU  - Galanakis, I.
TI  - Exchange interactions, spin waves, and Curie temperature in zincblende half-metallic sp-electron ferromagnets: the case of CaZ (Z = N, P, As, Sb)
JO  - Journal of physics / Condensed matter
VL  - 23
SN  - 0953-8984
CY  - Bristol
PB  - IOP Publ.
M1  - PreJuSER-17870
SP  - 296001
PY  - 2011
N1  - Record converted from VDB: 12.11.2012
AB  - 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.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
C6  - pmid:21705831
UR  - <Go to ISI:>//WOS:000292545200011
DO  - DOI:10.1088/0953-8984/23/29/296001
UR  - https://juser.fz-juelich.de/record/17870
ER  -