Ferromagnetism of MnAs studied by heteroepitaxial films on GaAs(001) -: art. no. 087203

被引：98

作者：

Das, AK ^{[1
]}

Pampuch, C ^{[1
]}

Ney, A ^{[1
]}

Hesjedal, T ^{[1
]}

Däweritz, L ^{[1
]}

Koch, R ^{[1
]}

Ploog, KH ^{[1
]}

机构：

[1] Paul Drude Inst Festkorperelekt, D-10117 Berlin, Germany

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.91.087203

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Thin epitaxial films of MnAs-promising canditates for the spin injection into semiconductors-are well known to undergo simultaneously a first-order structural and magnetic phase transition at 10-40 degreesC. The evolution of stress and magnetization of MnAs/GaAs(001), both measured quantitatively with our cantilever beam magnetometer at the coexistance region of alpha-MnAs and beta-MnAs, reveal an orthorhombically distorted unit cell of the ferromagnetic phase, which provides important clues on the origin of ferromagnetism in MnAs.

引用

页数：4

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