Roles of Excess Atoms in Electronic and Magnetic Properties of Fe_V_Z (Z = Al, Ga)

元データ 2003-03-15

概要

To expand our knowledge of Fe_<2+x>V_<1-x>Z (Z = Al, Ga), band calculations (LMTO-ASA) have heen performed for several x values (x = 0,±0.125,±0.25) with a supercell method. Obtained density of states and magnetic moments indicate that excess atoms, which are introduced instead of the original Fe or V atom in Fe_2VZ, bring a drastic change in electronic and magnetic properties of Fe_2VZ. The existence of those atoms causes the collapse of the gap (or pseudogap) and the change from nonmagnetic to magnetic states. In the magnetic state, those atoms carry 2.5-2.6μ_B for x < 0 and 0.7-1.1μ_B for x < 0.

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
浅野 摂郎 東大総合文化
IENAGA Youichi Department of Physics, Faculty of Science, Kagoshima University
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
Asano Setsuro Institute Of Physics College Of Arts And Sciences University Of Tokyo
Ishida Shuichi Division Of Cardiovascular Medicine Department Of Internal Medicine Ohmori Hospital Toho University
Ienaga Youichi Department Of Physics Faculty Of Science Kagoshima University
浅野 攝郎 東大総合文化
Ishida S Department Of Physics Faculty Of Science Kagoshima University
Fujii S Department Of Physics Faculty Of Science Kagoshima University

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