Back to Search
Start Over
Temperature driven Mott-Hubbard to charge-transfer insulator transition in hexagonal Sr0.6Ba0.4MnO3.
- Source :
-
Applied Physics Letters . 9/2/2019, Vol. 115 Issue 10, pN.PAG-N.PAG. 5p. 3 Graphs. - Publication Year :
- 2019
-
Abstract
- We have probed the electronic structure across the ferroelectric transition temperature (TC = 355 K) of hexagonal Sr0.6Ba0.4MnO3 (SBMO) which shows a magneto-electric effect at room temperature. The valence and conduction bands are characterized by resonant photoemission and X-ray absorption spectroscopy measurements, respectively. The valence band spectrum is found to be hugely modified across TC. Above TC, SBMO behaves like a Mott-Hubbard insulator, whereas at 300 K, it shows a charge-transfer-type insulator behavior. Modulation in the hybridization of Mn-3d and O-2p orbitals due to local structural variations with temperature unravels the rational for the observed electronic structure transition vis a vis magnetic and electrical behaviors of SBMO. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 115
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 138480162
- Full Text :
- https://doi.org/10.1063/1.5113570