Single-Crystalline Ferromagnetic Alloy Semiconductor Ge1-xMnx Grown on Ge(111)

被引:7
|
作者
Yada, Shinsuke [1 ]
Okazaki, Ryohei [1 ]
Ohya, Shinobu [1 ]
Tanaka, Masaaki [1 ]
机构
[1] Univ Tokyo, Dept Elect Engn & Informat Syst, Bunkyo Ku, Tokyo 1138656, Japan
基金
日本学术振兴会; 日本科学技术振兴机构;
关键词
D O I
10.1143/APEX.3.123002
中图分类号
O59 [应用物理学];
学科分类号
摘要
We investigate the structural and magnetic properties of Ge1-xMnx films grown on Ge(111) substrates. The Ge1-xMnx films prepared with appropriate epitaxial growth conditions are diamond-type single crystals with a homogeneous Mn distribution. Magnetic circular dichroism (MCD) spectra exhibit enhanced peaks at the critical point energy E-1 of Ge, with single-phase ferromagnetism. The MCD characteristics are consistent with magnetization data, and the Curie temperature increases with the Mn content x. These results indicate that the Ge1-xMnx films grown on Ge(111) are intrinsic ferromagnetic alloy semiconductors. (C) 2010 The Japan Society of Applied Physics
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页数:3
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