Temperature- and pressure-induced spin-state transitions in LaCoO3
Abstract
We report the continuous variation of the spin moment of cobalt in LaCoO3 across its temperature and pressure-induced spin transitions evidenced with Kβ emission spectra. The first thermal transition is best described by a transition to an orbitally nondegenerate intermediate spin (S=1) state. In parallel, continuous redistribution of the 3d electrons is also indicated by partial fluorescence yield x-ray absorption spectra. At high pressure, our study confirms that the material becomes low spin between 40 and 70 kbar at room temperature.
- Publication:
-
Physical Review B
- Pub Date:
- January 2006
- DOI:
- 10.1103/PhysRevB.73.024424
- arXiv:
- arXiv:cond-mat/0510569
- Bibcode:
- 2006PhRvB..73b4424V
- Keywords:
-
- 75.30.Wx;
- 71.30.+h;
- 71.70.Ch;
- 78.70.En;
- Spin crossover;
- Metal-insulator transitions and other electronic transitions;
- Crystal and ligand fields;
- X-ray emission spectra and fluorescence;
- Condensed Matter - Strongly Correlated Electrons
- E-Print:
- Phys. Rev. B 73, 024424 (2006)