Effect of oxygen vacancies on electronic states ofCaVO3−δandSrVO3−δ: A photoemission study

Autor:	Fumitoshi Iga, Yoshikazu Nishihara, Yoshihiro Aiura, Hiroshi Kato, Ohnuki H
Rok vydání:	1993
Předmět:	chemistry.chemical_classification Materials science Condensed matter physics Fermi level chemistry.chemical_element Electronic structure Oxygen Spectral line symbols.namesake chemistry symbols Metal–insulator transition Electronic band structure Inorganic compound Fermi Gamma-ray Space Telescope
Zdroj:	Physical Review B. 47:6732-6735
ISSN:	1095-3795 0163-1829
DOI:	10.1103/physrevb.47.6732
Popis:	There are two structures in the photoemission spectra of CaVO 3-δ and SrVO 3-δ in the d-band region, One peak is within ∼1 eV of the Fermi level and has a sharp Fermi cutoff. The other is a broad peak centered at ∼1.6 eV. From our photoemission spectra of CaVO 3-δ and SrVO 3-δ both with oxygen vacancies (δ=∼0.1) and without vacancies (6 = 0), it is shown that the relative intensity of the peak near the Fermi level for CaVO 3-δ drastically decreases with decreasing oxygen vacancy concentration (δ)
Databáze:	OpenAIRE
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