Scattering of electrons at the F-center in oxides of the perovskite family

Prosandeyev, S. A.; Chervonobrodov, S. P.; Tennenboum, I. M.

doi:10.1080/00150199408016580

Cited by 3 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In particular, this can cause an even-field current [32] or even phase transitions [33,34]. Note that our statement does not contradict the fact that the potential produced by the oxygen vacancy vanishes at small distances.…”

Section: The Interaction Between Microscopic Dipoles In Polar Crystalsmentioning

confidence: 57%

Study of intrinsic point defects in oxides of the perovskite family: I. Theory

Prosandeyev

Fisenko

Riabchinski

et al. 1996

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

Special features of atomic vacancies in oxides of the perovskite family have been studied within the framework of the Green function method. It has been shown that, in accordance with experiments, the oxygen vacancy has both shallow and comparatively deep levels corresponding to different charge states. The single-charged oxygen vacancy has a deep level and, hence, it could be a good trap for electrons. We shall show that, owing to interaction with the lattice polarization, an electron is captured by one of the neighbours to the vacancy ions. As a result the single-charged oxygen vacancy proves to be a dipole centre. Peculiarities in the optical absorption spectra connected with the single-charged oxygen vacancy are discussed.

show abstract

Section: The Interaction Between Microscopic Dipoles In Polar Crystalsmentioning

confidence: 57%

Study of intrinsic point defects in oxides of the perovskite family: I. Theory

Prosandeyev

Fisenko

Riabchinski

et al. 1996

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

show abstract

“…However, as the hot electrons in dielectrics have very small wavevectors, their scattering by microscopic dipoles cannot explain the appearance of a current of the order of a few per cent. In connection with this, it was suggested in [16,17] that a non-linear dependence of the field on polarization be taken into account. In fact, as is seen from the data obtained, anisotropic scattering of hot electrons can arise from the gigantic enhancement of the electric field of a microscopic dipole.…”

Section: Discussionmentioning

confidence: 99%

A deviation from the Coulomb law for interacting microscopic impurities in a perovskite-like lattice

Prosandeyev¹,

Riabchinski²

1996

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

show abstract

Could the Oxygen Vacancy in Oxides of the Perovskite Family Be a Dipole Center?

Prosandeyev

Osipenko

1995

Physica Status Solidi (b)

Self Cite

View full text Add to dashboard Cite

The lattice polarization in oxides of the perovskite family is demonstrated to give rise to symmetry breaking of one-electron orbitals at F centers. This can provide an explanation of recent experiments on paraelectric KTaO, where, by the second harmonic generation method, approximately lo'* cm-3 dipole centers were found, the concentration of which depends on reduction and oxidation processes. I) Sorge str. 5, 344 104 Rostov-on-Don, Russia.

show abstract

Scattering of electrons at the F-center in oxides of the perovskite family

Cited by 3 publications

References 0 publications

Study of intrinsic point defects in oxides of the perovskite family: I. Theory

Study of intrinsic point defects in oxides of the perovskite family: I. Theory

A deviation from the Coulomb law for interacting microscopic impurities in a perovskite-like lattice

Could the Oxygen Vacancy in Oxides of the Perovskite Family Be a Dipole Center?

Contact Info

Product

Resources

About