Direct probe of Mott-Hubbard to charge-transfer insulator transition and electronic structure evolution in transition-metal systems

Journal Article · Mon Jul 11 00:00:00 EDT 2011 · Physical Review. B, Rapid Communications (online)

DOI:https://doi.org/10.1103/PhysRevB.83.241102· OSTI ID:1048300

Olalde-Velasco, P; Jimenez-Mier, J; Denlinger, JD; Hussain, Z; Yang, WL

We report the most direct experimental verification of Mott-Hubbard and charge-transfer insulators through x-ray emission spectroscopy in transition-metal (TM) fluorides. The p-d hybridization features in the spectra allow a straightforward energy alignment of the anion-2p and metal-3d valence states, which visually shows the difference between the two types of insulators. Furthermore, in parallel with the theoretical Zaanen-Sawatzky-Allen diagram, a complete experimental systematics of the 3d Coulomb interaction and the 2p-3d charge-transfer energy is reported and could serve as a universal experimental trend for other TM systems including oxides.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: Advanced Light Source Division
• DOE Contract Number: DE-AC02-05CH11231
• OSTI ID: 1048300
• Report Number(s): LBNL-4962E; PRBOFW; TRN: US201216%%877
• Journal Information: Physical Review. B, Rapid Communications (online), Vol. 83, Issue 24; Related Information: Journal Publication Date: June 24, 2011; ISSN 1089-4896
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALIGNMENT
ELECTRONIC STRUCTURE
EMISSION SPECTROSCOPY
FLUORIDES
HYBRIDIZATION
OXIDES
PROBES
SPECTRA
VALENCE
VERIFICATION
Mott-hubbard
Charge-transfer
transition-metal systems
Energy Alignment Through Hybridization (EATH)