TY - JOUR
T1 - Magnetic structures and half-metallicity at zincblende ferromagnetic/antiferromagnetic interfaces
T2 - Role of tetragonal distortions
AU - Nakamura, Kohji
AU - Akiyama, Toru
AU - Ito, Tomonori
AU - Freeman, A. J.
N1 - Funding Information:
Work at Mie University was supported by a Grant-in-Aid for Scientific Research (Grant numbers 16760024 and 16310081), and performed for computations at the CRC and the CITN, Mie University, and the ISSP, University of Tokyo. Work at Northwestern University was supported by DOE Grant De-FG02-88ER45372/A024.
PY - 2007/3
Y1 - 2007/3
N2 - In our search for half-metallic exchange bias interfaces, we determined magnetic structures at ferromagnetic (FM)/antiferromagnetic (AFM) interfaces in zincblende transition-metal chalcogenides, CrSe/MnSe and CrTe/MnTe, by means of the first principles full-potential linearized augmented plane-wave method, including the effect of a tetragonal distortion that may be induced in epitaxial growth. The tetragonal distortion with c / a < 1 in both MnSe and MnTe is found to prefer the uncompensated AFM interface while that with c / a > 1, the compensated AFM interface. With the uncompensated AFM interface, an antiparallel alignment of the Cr and Mn moments induces an excellent half-metallicity at the interface even when the tetragonal distortion is included.
AB - In our search for half-metallic exchange bias interfaces, we determined magnetic structures at ferromagnetic (FM)/antiferromagnetic (AFM) interfaces in zincblende transition-metal chalcogenides, CrSe/MnSe and CrTe/MnTe, by means of the first principles full-potential linearized augmented plane-wave method, including the effect of a tetragonal distortion that may be induced in epitaxial growth. The tetragonal distortion with c / a < 1 in both MnSe and MnTe is found to prefer the uncompensated AFM interface while that with c / a > 1, the compensated AFM interface. With the uncompensated AFM interface, an antiparallel alignment of the Cr and Mn moments induces an excellent half-metallicity at the interface even when the tetragonal distortion is included.
KW - Exchange bias
KW - Half-metal
KW - Transition-metal chalcogenide
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U2 - 10.1016/j.jmmm.2006.10.753
DO - 10.1016/j.jmmm.2006.10.753
M3 - Article
AN - SCOPUS:33847662850
SN - 0304-8853
VL - 310
SP - 2186
EP - 2188
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
IS - 2 SUPPL. PART 3
ER -