The origin of magnetism in a supposedly nonmagnetic osmium oxide
Abstrak
A supposedly nonmagnetic 5d$^1$ double perosvkite oxide is investigated by a combination of spectroscopic and theoretical methods, namely resonant inelastic X-ray scattering, X-ray absorption spectroscopy, magnetic circular dichroism, and multiplet ligand field calculations. We found that the large spin-orbit coupling admixes the 5d $t_{2g}$ and $e_g$ orbitals, covalency raises the 5d population well above the nominal value, and the local symmetry is lower than $O_h$. The obtained electronic interactions account for the finite magnetic moment of Os in this compound and, in general, of 5d$^1$ ions. Our results provide direct evidence of elusive Jahn-Teller distortions, hinting at a strong electron-lattice coupling.
Topik & Kata Kunci
Penulis (19)
S. Agrestini
F. Borgatti
P. Florio
J. Frassineti
D. Fiore Mosca
Q. Faure
B. Detlefs
C. J. Sahle
S. Francoual
J. Choi
M. Garcia-Fernandez
K. -J. Zhou
V. F. Mitrovic
P. M. Woodward
G. Ghiringhelli
C. Franchini
F. Boscherini
S. Sanna
and M. Moretti Sala
Akses Cepat
- Tahun Terbit
- 2024
- Bahasa
- en
- Sumber Database
- arXiv
- Akses
- Open Access ✓