Room-temperature ferromagnetism in self-assembled (In, Mn)As quantum dots

被引：21

作者：

Chen, Y. F.

Huang, J. H. ^{[1
]}

Lee, W. N.

Chin, T. S.

Huang, R. T.

Chen, F. R.

Kai, J. J.

Ku, H. C.

机构：

[1] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 300, Taiwan

[2] Natl Taiwan Ocean Univ, Inst Mat Engn, Chilung 202, Taiwan

[3] Natl Tsing Hua Univ, Dept Engn & Syst Sci, Hsinchu 300, Taiwan

[4] Natl Tsing Hua Univ, Dept Phys, Hsinchu 300, Taiwan

来源：

APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 02期

关键词：

D O I：

10.1063/1.2430930

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Self-assembled In1-xMnxAs quantum dots (0.19 <= x <= 0.45) have been grown on GaAs (100) substrates by low-temperature molecular beam epitaxy. The microstructure analysis revealed that the uniformly distributed In1-xMnxAs dots have a zinc blende structure as x <= 0.38. Furthermore, all samples exhibit ferromagnetic state at 5 K, and their Curie temperatures range from 260 to 340 K varying with x. These (In, Mn)As quantum dots are promising for room-temperature spintronic devices.

引用

页数：3

共 14 条

[1]

Burkard G, 2002, NANOSCI TECHNOL, P229

[2] Zener model description of ferromagnetism in zinc-blende magnetic semiconductors [J].