Universität zu Köln

Hollmann, N., Hu, Z., Willers, T., Bohaty, L., Becker, P., Tanaka, A., Hsieh, H. H., Lin, H. -J., Chen, C. T. and Tjeng, L. H. (2010). Local symmetry and magnetic anisotropy in multiferroic MnWO4 and antiferromagnetic CoWO4 studied by soft x-ray absorption spectroscopy. Phys. Rev. B, 82 (18). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

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Abstract

Soft x-ray absorption experiments on the transition-metal L-2,L-3 edge of multiferroic MnWO4 and antiferromagnetic CoWO4 are presented. The observed linear polarization dependence, analyzed by full-multiplet calculations, is used to determine the ground-state wave function of the magnetic Mn2+ and Co2+ ions. The impact of the local structure and the spin-orbit coupling on the orbital moment is discussed in terms of the single-ion anisotropy. It is shown that the orbital moment in CoWO4 is responsible for the collinear antiferromagnetism, while the small size of spin-orbit coupling effects make spiral magnetic order in MnWO4 possible, enabling the material to be multiferroic.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Hollmann, N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hu, Z. UNSPECIFIED UNSPECIFIED UNSPECIFIED Willers, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bohaty, L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Becker, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Tanaka, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hsieh, H. H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lin, H. -J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Chen, C. T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Tjeng, L. H. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-492249
DOI:	10.1103/PhysRevB.82.184429
Journal or Publication Title:	Phys. Rev. B
Volume:	82
Number:	18
Date:	2010
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	2469-9969
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language MAGNETOCRYSTALLINE ANISOTROPY; PHOTOEMISSION Multiple languages Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/49224