Identifying the character of ferromagnetic Mn in epitaxial Fe/(Ga,Mn)As heterostructures

被引：18

作者：

Sperl, M. ^{[1
]}

Maccherozzi, F. ^{[2
]}

Borgatti, F. ^{[3
]}

Verna, A. ^{[4
]}

Rossi, G. ^{[4
,5
]}

Soda, M. ^{[1
]}

Schuh, D. ^{[1
]}

Bayreuther, G. ^{[1
]}

Wegscheider, W. ^{[1
]}

Cezar, J. C. ^{[6
]}

Yakhou, F. ^{[6
]}

Brookes, N. B. ^{[6
]}

Back, C. H. ^{[1
]}

Panaccione, G. ^{[4
]}

机构：

[1] Univ Regensburg, Inst Expt Phys, D-93040 Regensburg, Germany

[2] Orme Merisiers St Aubin, Soleil Synchrotron, F-91192 Gif Sur Yvette, France

[3] CNR, ISMN, I-40126 Bologna, Italy

[4] CNR, INFM, Lab Nazl TASC, I-34012 Trieste, Italy

[5] Univ Modena & Reggio Emilia, Dipartimento Fis, I-41100 Modena, Italy

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

来源：

PHYSICAL REVIEW B | 2010年 / 81卷 / 03期

关键词：

MAGNETIC-PROPERTIES; ABSORPTION-SPECTRA; SPINTRONICS; SURFACE; ELECTRONICS; REFLECTION; INTERFACE; FILMS;

D O I：

10.1103/PhysRevB.81.035211

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We demonstrate that the growth of Fe/(Ga,Mn)As heterointerfaces can be efficiently controlled by epitaxy and that robust ferromagnetism of the interfacial Mn atoms is induced at room temperature by the proximity effect. X-ray magnetic circular dichroism and x-ray resonant reflectivity data, supported by theoretical calculations, were used to monitor both temperature and magnetic field dependence of the Mn magnetic moment in the semiconducting host. We identify distinct Mn populations, each of them with specific magnetic character.

引用

页数：6

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