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Disentangling orbital and spin exchange interactions for Co2+ on a rocksalt lattice

Abstract:

Neutron spectroscopy was applied to study the magnetic interactions of orbitally degenerate Co2+ on a host MgO rocksalt lattice where no long-range spin or orbital order exists. The paramagnetic nature of the substituted monoxide Co0.03Mg0.97O allows for the disentanglement of spin exchange and spin-orbit interactions. By considering the prevalent excitations from Co2+ spin pairs, we extract seven exchange constants out to the fourth coordination shell. An antiferromagnetic next-nearest-neigh...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/physrevb.98.024415

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Institution:
University of Oxford
Division:
MPLS Division
Department:
Physics
Role:
Author
Publisher:
American Physical Society
Journal:
Physical Review B More from this journal
Volume:
98
Article number:
024415
Publication date:
2018-07-17
DOI:
EISSN:
2469-9969
ISSN:
2469-9950
Language:
English
Pubs id:
pubs:891900
UUID:
uuid:8d2bad21-845b-45d8-8aea-3e89348c2399
Local pid:
pubs:891900
Source identifiers:
891900
Deposit date:
2019-02-13

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