Magnetic moment of Mn in the ferromagnetic semiconductor (Ga0.98Mn0.02)As

被引：86

作者：

Ohldag, H ^{[1
]}

Solinus, V

Hillebrecht, FU

Goedkoop, JB

Finazzi, M

Matsukura, F

Ohno, H

机构：

[1] Univ Dusseldorf, Inst Angew Phys, D-40225 Dusseldorf, Germany

[2] European Synchrotron Radiat Facil, F-38043 Grenoble, France

[3] Tohoku Univ, Elect Commun Res Inst, Lab Elect Intelligent Syst, Sendai, Miyagi 9808577, Japan

来源：

APPLIED PHYSICS LETTERS | 2000年 / 76卷 / 20期

关键词：

D O I：

10.1063/1.126519

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have studied the quasibinary ferromagnetic semiconductor (Ga0.98Mn0.02)As by magnetic circular dichroism in x-ray absorption. We find a richly structured Mn absorption spectrum typical for localized 3d electrons. An analysis of the magnetization-averaged and dichroism line shapes shows a local Mn moment of 4.6 mu(B), which is close to the Hund's rule moment for the half-filled 3d shell. The magnitude of the dichroism reveals that only about 1/7 of the Mn atoms participate in the ferromagnetic order. Our experiment does not show a distinction between the ferro- and paramagnetic Mn atoms. (C) 2000 American Institute of Physics. [S0003-6951(00)00720-8].

引用

页码：2928 / 2930

页数：3

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