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Model for coupled 4 f-3d magnetic spectra: a neutron scattering study of the Yb-Fe hybridization in Yb3Fe5 O12

Abstract:
In this work, we explore experimentally and theoretically the spectrum of magnetic excitations of the Fe3+ and Yb3+ ions in ytterbium iron garnet (Yb3Fe5O12). We present a complete description of the crystal-field splitting of the 4f states of Yb3+, including the effect of the exchange field generated by the magnetically ordered Fe subsystem. We also consider a further effect of the Fe-Yb exchange interaction, which is to hybridize the Yb crystal field excitations with the Fe spin-wave modes at positions in the Brillouin zone where the two types of excitations cross. We present detailed measurements of these hybridized excitations, and we propose a framework that can be used in the quantitative analysis of the coupled spectra in terms of the anisotropic 4f-3d exchange interaction.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/PhysRevB.105.104422

Authors


More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Condensed Matter Physics
Role:
Author
ORCID:
0000-0002-3172-834X
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Condensed Matter Physics
Oxford college:
Oriel College
Role:
Author
ORCID:
0000-0002-3575-7471


Publisher:
American Physical Society
Journal:
Physical Review B More from this journal
Volume:
105
Issue:
10
Article number:
104422
Publication date:
2022-03-23
Acceptance date:
2022-02-25
DOI:
EISSN:
2469-9969
ISSN:
2469-9950


Language:
English
Keywords:
Pubs id:
1251386
Local pid:
pubs:1251386
Deposit date:
2022-04-24

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