Electronic structure of PrCoO_3 and its temperature evolution
| Autor: | Pandey, S. K., Patil, Swapnil, Medicherla, V. R. R., Singh, R. S., Maiti, Kalobaran |
|---|---|
| Rok vydání: | 2007 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevB.77.115137 |
| Popis: | We investigate the detailed electronic structure of PrCoO$_3$ and its temperature evolution using state-of-the-art photoemission spectroscopy and ab initio band structure calculations. We observe that in addition to the correlation effect, spin-orbit interaction plays an important role in determining the electronic properties of this system. Pr 4$f$ states are found to be strongly hybridized with the O 2$p$ and Co 3$d$ valence electronic states, and thus influences the electronic properties significantly. The calculated results corresponding to the intermediate spin state of Co provide a good description of the experimental spectra at 300 K. The decrease in temperature from 300 K leads to a gradual enhancement of the low spin state contributions in the electronic structure. The temperature evolution of the band gap is found to be consistent with the transport data. Comment: 7 pages, 9 figures |
| Databáze: | arXiv |
| Externí odkaz: |
|