Journal
PHYSICAL REVIEW B
Volume 83, Issue 23, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.83.235105
Keywords
-
Funding
- MEXT, Japan
- Canadian funding organization NSERC
- Canadian funding organization CFI
- Canadian funding organization CIFAR
- Japan Society for the Promotion of Science (JSPS)
- Grants-in-Aid for Scientific Research [19GS0207, 19052008] Funding Source: KAKEN
Ask authors/readers for more resources
We have studied the electronic structure of multiferroic BiCoO3 using x-ray photoemission spectroscopy (XPS), x-ray absorption spectroscopy (XAS), and subsequent model calculations. The XAS results show that the Co3+ ion takes the high-spin d(6) configuration which usually prefers G-type antiferromagnetic state. The XPS results and model Hartree-Fock calculations show that, in case of BiCoO3, small charge-transfer energy plays an essential role to enhance the Co-O-O-Co superexchange pathways. It is found that the combination of ferro-type orbital ordering of Co 3d t(2g) and the Co-O-O-Co superexchange interaction gives rise to C-type antiferromagnetic state in BiCoO3. The present analysis suggests that, in addition to the Bi-O bonds responsible for the noncentrosymmetric deformation, the O-O bonds are important to stabilize the multiferroic phase of BiCoO3.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available