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Multi-spin-state dynamics during insulator-metal crossover in LaCoO3.
- Source :
-
Physical Review B: Condensed Matter & Materials Physics . Aug2014, Vol. 90 Issue 8, p081109-1-081109-4. 4p. - Publication Year :
- 2014
-
Abstract
- We have investigated the dynamics of spin-state crossover (SSC) for perovskite LaCoO3 through optical phonons by means of infrared and inelastic x-ray spectroscopy. Upon thermally induced SSC, anomalously dispersionless Co-0 bond stretching phonons coupled to the thermally excited spin state have been identified. The enhanced spin-state fluctuation irrespective of the presence of a clear charge gap suggests the emergence of complex spin-state disproportionation involving low-, intermediate-, and high-spin states due to the strong correlation among thermally activated spin states. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10980121
- Volume :
- 90
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- Physical Review B: Condensed Matter & Materials Physics
- Publication Type :
- Academic Journal
- Accession number :
- 98971185
- Full Text :
- https://doi.org/10.1103/PhysRevB.90.081109