Structural and magnetic order in MnAs films grown by molecular beam epitaxy on GaAs for spin injection

被引：25

作者：

Däweritz, L ^{[1
]}

Kästner, M ^{[1
]}

Hesjedal, T ^{[1
]}

Plake, T ^{[1
]}

Jenichen, B ^{[1
]}

Ploog, KH ^{[1
]}

机构：

[1] Paul Drude Inst Solid State Elect, D-10117 Berlin, Germany

来源：

JOURNAL OF CRYSTAL GROWTH | 2003年 / 251卷 / 1-4期

关键词：

phase transition; self-organization; molecular beam epitaxy; manganese arsenide; magnetic materials;

D O I：

10.1016/S0022-0248(02)02360-6

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

MnAs films were grown by MBE on GaAs(0 0 1) and GaAs(1 1 3)A. We performed a systematic study about the correlation between their structural and magnetic order, which is intimately connected with the phase transition between beta-MnAs and alpha-MnAs during sample cooling after growth. A phase separation process leads to a self-organized structure on the sub-micron scale with alternating ferromagnetic and nonferromagnetic stripes. The well-ordered structure contains defects which correspond to typical crystal imperfections on the atomic level. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：297 / 302

页数：6

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