Universität zu Köln

Leedahl, Brett, Sundermann, Martin, Amorese, Andrea ORCID: 0000-0003-0271-0543, Severing, Andrea ORCID: 0000-0002-9547-2742, Gretarsson, Hlynur, Zhang, Lunyong, Komarek, Alexander C., Maignan, Antoine, Haverkort, Maurits W. ORCID: 0000-0002-7216-3146 and Tjeng, Liu Hao ORCID: 0000-0002-0595-9312 (2019). Origin of Ising magnetism in Ca3Co2O6 unveiled by orbital imaging. Nat. Commun., 10. LONDON: NATURE PUBLISHING GROUP. ISSN 2041-1723

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Abstract

The one-dimensional cobaltate Ca3Co2O6 is an intriguing material having an unconventional magnetic structure, displaying quantum tunneling phenomena in its magnetization. Using a newly developed experimental method, s-core-level non-resonant inelastic x-ray scattering (s-NIXS), we were able to image the atomic Co 3d orbital that is responsible for the lsing magnetism in this system. We can directly observe that corrections to the commonly accepted ideal prismatic trigonal crystal field scheme occur in Ca3Co2O6, and it is the complex d(2) orbital occupied by the sixth electron at the high-spin Co-trig(3+)(d(6)) sites that generates the Ising-like behavior. The ability to directly relate the orbital occupation with the local crystal structure is essential to model the magnetic properties of this system.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Leedahl, Brett UNSPECIFIED UNSPECIFIED UNSPECIFIED Sundermann, Martin UNSPECIFIED UNSPECIFIED UNSPECIFIED Amorese, Andrea UNSPECIFIED orcid.org/0000-0003-0271-0543 UNSPECIFIED Severing, Andrea UNSPECIFIED orcid.org/0000-0002-9547-2742 UNSPECIFIED Gretarsson, Hlynur UNSPECIFIED UNSPECIFIED UNSPECIFIED Zhang, Lunyong UNSPECIFIED UNSPECIFIED UNSPECIFIED Komarek, Alexander C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Maignan, Antoine UNSPECIFIED UNSPECIFIED UNSPECIFIED Haverkort, Maurits W. UNSPECIFIED orcid.org/0000-0002-7216-3146 UNSPECIFIED Tjeng, Liu Hao UNSPECIFIED orcid.org/0000-0002-0595-9312 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-126821
DOI:	10.1038/s41467-019-13273-4
Journal or Publication Title:	Nat. Commun.
Volume:	10
Date:	2019
Publisher:	NATURE PUBLISHING GROUP
Place of Publication:	LONDON
ISSN:	2041-1723
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Physics > Institute of Physics II
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language CHAIN COMPOUND; CRYSTAL Multiple languages Multidisciplinary Sciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/12682