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- W2980494466 abstract "We investigate room temperature core level and valence band spectra of BaBiO3 using x-ray photoemission spectroscopy and band structure calculations. The features in the valence band spectrum were studied using density functional theory (DFT) under local density approximation (LDA) and Tran Blaha modified Becke Johnson (TB mBJ) exchange potential. The calculations were performed for three different structural parameters; monoclinic, cubic and monoclinic (M[Formula: see text]). Our results of the core level spectrum and DFT calculations rule out charge disproportionation of the Bi ions. The valence band spectrum displays gap at the Fermi edge and fine structures in the region close to the Fermi edge. The DFT calculation under TB mBJ for the monoclinic structure is able to generate gap and match the energy positions of the fine structure in a better way. Our calculation results show that there are holes in the O 2[Formula: see text] states and unequal transfer of electrons to the states of the Bi ions. Such mechanism could lead to bond disproportionation and its association with the fine structures in the valence band. The current results reveal the significance of strong link between the lattice distortion and electronic structure and hence to its physical properties." @default.
- W2980494466 created "2019-10-25" @default.
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- W2980494466 date "2019-11-01" @default.
- W2980494466 modified "2023-10-16" @default.
- W2980494466 title "Interplay of lattice distortion and electronic structure in BaBiO3" @default.
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- W2980494466 doi "https://doi.org/10.1088/1361-648x/ab4e6f" @default.
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