A Half-Metallic Band Structure and Fe_2MnZ (Z=Al, Si, P)

元データ 1995-01-15 社団法人日本物理学会

概要

Band calculation results show that Heusler compounds Fe_2MnZ (Z=Al, Si, P) have a band gap near the Fermi energy for one spin direction. Except for Fe_2MnSi, the compounds does not have a half-metallic character because there is a slight density of states at the Fermi energy in the minority-spin state. An analysis of density of states indicates that there exists sufficiently strong d-d hybridization between metal atoms and weak p-d hybridization between Si and metal atoms. Due to this weakness, the replacement of Si by Al or P does not cause considerable change in the DOS structure. However, the weak hybridization defines the electronic character of the system.

著者

FUJII Shinpei Department of Physics, Faculty of Science, Kagoshima University
ISHIDA Shoji Department of Physics, Faculty of Science, Kagoshima University
ASANO Setsuro Institute of Physics, College of Arts and Sciences, University of Tokyo
Ishida Shoji Department Of Physics Faculty Of Science Kagoshima University
Fujii Shinpei Department Of Physics Faculty Of Science Kagoshima University
Asano Setsuro Institute For Solid State Physics The University Of Tokyo
Asano Setsuro The Graduate School Of/college Of Arts And Sciences The University Of Tokyo
Ishida Shuichi Division Of Cardiovascular Medicine Department Of Internal Medicine Ohmori Hospital Toho University
Fujii S Department Of Physics Faculty Of Science Kagoshima University

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