Giant anisotropy in x-ray magnetic linear dichroism in (Ga,Mn)As

被引：24

作者：

Freeman, A. A. ^{[1
]}

Edmonds, K. W.

van der Laan, G.

Farley, N. R. S.

Johal, T. K.

Arenholz, E.

Campion, R. P.

Foxon, C. T.

Gallagher, B. L.

机构：

[1] Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England

[2] Daresbury Lab, CCLRC, Warrington WA4 4AD, Cheshire, England

[3] Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA

来源：

PHYSICAL REVIEW B | 2006年 / 73卷 / 23期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1103/PhysRevB.73.233303

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Hugely anisotropic Mn L-2,L-3 x-ray magnetic linear dichroism (XMLD) is reported for the ferromagnetic semiconductor (Ga,Mn)As. The sign, magnitude, and line shape of the dichroism changes with azimuthal rotation of the samples between the in-plane < 110 > and < 100 > directions. The strong anisotropy is confirmed by multiplet calculations for a Mn 3d(5) configuration where charge anisotropy and magnetocrystalline anisotropy are absent. This allows a precise determination of the Mn 3d crystal-field splitting, and establishes the anisotropy in the XMLD as a general feature for localized moment systems with crystal-field symmetry.

引用

页数：4

共 28 条

[1] Theory of magnetic anisotropy in III1-xMnxV ferromagnets -: art. no. 054418 [J].

Abolfath, M ;

Jungwirth, T ;

Brum, J ;

MacDonald, AH .

PHYSICAL REVIEW B, 2001, 63 (05)

[2] MAGNETIC-X-RAY DICHROISM STUDY OF THE NEAREST-NEIGHBOR SPIN-SPIN CORRELATION-FUNCTION AND LONG-RANGE MAGNETIC ORDER-PARAMETER IN ANTIFERROMAGNETIC NIO [J].

ALDERS, D ;

VOGEL, J ;

LEVELUT, C ;

PEACOR, SD ;

HIBMA, T ;

SACCHI, M ;

TJENG, LH ;

CHEN, CT ;

VANDERLAAN, G ;

THOLE, BT ;

SAWATZKY, GA .

EUROPHYSICS LETTERS, 1995, 32 (03) :259-265

[3] Design and performance of an eight-pole resistive magnet for soft x-ray magnetic dichroism measurements [J].

Arenholz, E ;

Prestemon, SO .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2005, 76 (08) :1-8

[4] High-quality GaMnAs films grown with arsenic dimers [J].

Campion, RP ;

Edmonds, KW ;

Zhao, LX ;

Wang, KY ;

Foxon, CT ;

Gallagher, BL ;

Staddon, CR .

JOURNAL OF CRYSTAL GROWTH, 2003, 247 (1-2) :42-48

[5] X-RAY CIRCULAR-DICHROISM AND LOCAL MAGNETIC-FIELDS [J].

CARRA, P ;

THOLE, BT ;

ALTARELLI, M ;

WANG, XD .

PHYSICAL REVIEW LETTERS, 1993, 70 (05) :694-697

[6] Sign dependence of the X-ray magnetic linear dichroism on the antiferromagnetic spin axis in LaFeO3 thin films -: art. no. 020401 [J].

Czekaj, S ;

Nolting, F ;

Heyderman, LJ ;

Willmott, PR ;

van der Laan, G .

PHYSICAL REVIEW B, 2006, 73 (02)

[7] Determining element-specific magnetocrystalline anisotropies using x-ray magnetic linear dichroism [J].

Dhesi, SS ;

van der Laan, G ;

Dudzik, E .

APPLIED PHYSICS LETTERS, 2002, 80 (09) :1613-1615

[8] Anisotropic spin-orbit coupling and magnetocrystalline anisotropy in vicinal Co films [J].

Dhesi, SS ;

van der Laan, G ;

Dudzik, E ;

Shick, AB .

PHYSICAL REVIEW LETTERS, 2001, 87 (06) :67201-1

[9] Hole-mediated ferromagnetism in tetrahedrally coordinated semiconductors [J].

Dietl, T ;

Ohno, H ;

Matsukura, F .

PHYSICAL REVIEW B, 2001, 63 (19)

[10] Surface effects in Mn L3,2 x-ray absorption spectra from (Ga,Mn)As [J].

Edmonds, KW ;

Farley, NRS ;

Campion, RP ;

Foxon, CT ;

Gallagher, BL ;

Johal, TK ;

van der Laan, G ;

MacKenzie, M ;

Chapman, JN ;

Arenholz, E .

APPLIED PHYSICS LETTERS, 2004, 84 (20) :4065-4067

← 1 2 3 →