| Autor: |
Dutta J; Department of Physical Chemistry, Indian Association for the Cultivation of Science Jadavpur, Kolkata 700 032, India., Adhikari S; Department of Physical Chemistry, Indian Association for the Cultivation of Science Jadavpur, Kolkata 700 032, India., Kovaleva NN; Lebedev Physical Institute, Russian Academy of Sciences, Moscow 119991, Russia. |
| Jazyk: |
angličtina |
| Zdroj: |
The Journal of chemical physics [J Chem Phys] 2019 Feb 14; Vol. 150 (6), pp. 064703. |
| DOI: |
10.1063/1.5082008 |
| Abstrakt: |
A model Hamiltonian for centrifugally stabilized electronic-vibrational motion of a cubic perturbed upper "Mexican hat" potential surface for a Mn 3+ ion in an octahedral symmetry is formulated, and its eigenspectrum is explored. Theoretically calculated eigenvalues for cubic perturbed ground and excited electronic states are employed to interpret the origin of higher energy narrow side bands (satellite transitions) appearing in the dielectric function spectra of the LaMnO 3 complex, which exhibit anomalous temperature dependence in the vicinity of the Néel temperature, T N ≃ 140 K [N. N. Kovaleva et al., J. Exp. Theor. Phys. 122, 890 (2016)]. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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