Angle-dependent Ni2+ x-ray magnetic linear dichroism:: Interfacial coupling revisited

被引:91
作者
Arenholz, Elke [1 ]
van der Laan, Gerrit
Chopdekar, Rajesh V.
Suzuki, Yuri
机构
[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA
[2] Daresbury Lab, Magnet Spect Grp, Warrington WA4 4AD, Cheshire, England
[3] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA
关键词
D O I
10.1103/PhysRevLett.98.197201
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Using x-ray magnetic linear dichroism (XMLD) for magnetometry requires detailed knowledge of its dependence on the relative orientation of polarization, magnetic moments, and crystallographic axes. We show that Ni2+ L-2,L-3 XMLD in cubic lattices has to be described as a linear combination of two fundamental spectra-not one as previously assumed. The spectra are calculated using atomic multiplet theory and the angular dependence is derived from crystal field symmetry. Applying our results to Co/NiO(001) interfaces, we find perpendicular coupling between Ni and Co moments.
引用
收藏
页数:4
相关论文
共 23 条
[1]   Temperature and thickness dependence of magnetic moments in NiO epitaxial films [J].
Alders, D ;
Tjeng, LH ;
Voogt, FC ;
Hibma, T ;
Sawatzky, GA ;
Chen, CT ;
Vogel, J ;
Sacchi, M ;
Iacobucci, S .
PHYSICAL REVIEW B, 1998, 57 (18) :11623-11631
[2]   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
[3]   Anisotropic x-ray magnetic linear dichroism at the Fe L2,3 edges in Fe3O4 [J].
Arenholz, Elke ;
van der Laan, Gerrit ;
Chopdekar, Rajesh V. ;
Suzuki, Yuri .
PHYSICAL REVIEW B, 2006, 74 (09)
[4]   Exchange anisotropy - a review [J].
Berkowitz, AE ;
Takano, K .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 200 (1-3) :552-570
[5]   Soft X-ray microscopy at a spatial resolution better than 15nm [J].
Chao, WL ;
Harteneck, BD ;
Liddle, JA ;
Anderson, EH ;
Attwood, DT .
NATURE, 2005, 435 (7046) :1210-1213
[6]  
CHOPDEKAR RV, IN PRESS
[7]   Element-specific imaging of magnetic domains at 25 nm spatial resolution using soft x-ray microscopy [J].
Fischer, P ;
Eimüller, T ;
Schütz, G ;
Denbeaux, G ;
Pearson, A ;
Johnson, L ;
Attwood, D ;
Tsunashima, S ;
Kumazawa, M ;
Takagi, N ;
Köhler, M ;
Bayreuther, G .
REVIEW OF SCIENTIFIC INSTRUMENTS, 2001, 72 (05) :2322-2324
[8]   Giant anisotropy in x-ray magnetic linear dichroism in (Ga,Mn)As [J].
Freeman, A. A. ;
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. .
PHYSICAL REVIEW B, 2006, 73 (23)
[9]   SOFT-X-RAY MAGNETIC CIRCULAR-DICHROISM AND MAGNETIC-FILMS [J].
IDZERDA, YU ;
CHEN, CT ;
LIN, HJ ;
MEIGS, G ;
HO, GH ;
KAO, CC .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1994, 347 (1-3) :134-141
[10]   Spectroscopic identification and direct imaging of interfacial magnetic spins -: art. no. 247201 [J].
Ohldag, H ;
Regan, TJ ;
Stöhr, J ;
Scholl, A ;
Nolting, F ;
Lüning, J ;
Stamm, C ;
Anders, S ;
White, RL .
PHYSICAL REVIEW LETTERS, 2001, 87 (24)