Search Results - "Vikhnin, V.S."

Anharmonic charge transfer vibronic states and luminescence dynamics of uranyl compounds by Liu, G.K., Vikhnin, V.S.

“…Configurations of harmonic and anharmonic charge transfer vibronic excitons (CTVE-I and CTVE-II) in uranyl complexes. The co-existence of CTVE-I and CTVE-II…”
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Reply to ‘Comment on anharmonic charge transfer vibronic states and luminescence dynamics of uranyl compounds’ by Liu, G.K., Vikhnin, V.S.

“…The theoretical basis of charge transfer coupling only to the harmonic modes of lattice vibration does not satisfactorily explain the observed uranyl…”
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New polaronic excitons in ferroelectric oxides: phenomenological theory by Vikhnin, V.S.

“…It is shown that three types of new polaronic excitons exist in ferroelectric oxides–charge transfer vibronic excitons ( CTVEs). The electron-hole bipolaron…”
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Hydrostatic pressure induced splitting of recombination luminescence band in KTaO 3 : Manifestation of charge transfer vibronic exciton phase by Vikhnin, V.S., Kutsenko, A.B., Kapphan, S.E.

“…Hydrostatic pressure induced splitting of luminescence transitions under UV photoexcitation was observed in KTaO 3 crystal. Two additional satellite bands of…”
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The model of metal–insulator phase transition in vanadium oxide by Vikhnin, V.S., Lysenko, S., Rua, A., Fernandez, F., Liu, H.

“…Thermally induced metal–insulator phase transitions (PT) in VO 2 thin films are studied theoretically and experimentally. The hysteresis phenomena in the…”
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The model of ultrafast light-induced insulator-metal phase transition in VO2 by VIKHNIN, V. S, LYSENKO, S, RUA, A, FEMANDEZ, F, LIU, H

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Light-induced metastable states in ferroelectric oxides by Liu, G.K., Vikhnin, V.S., Kapphan, S.E.

“…New Raman scattering lines (at 463cm−1 and at 156cm−1) induced by strong enough optical pumping in nominally pure KTaO3 crystals are manifested. The model of…”
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The model of ultrafast light-induced insulator-metal phase transition in VO 2 by Vikhnin, V.S., Lysenko, S., Rua, A., Fernandez, F., Liu, H.

“…Ultrafast light-induced insulator-metal phase transitions (PT) in VO 2 thin films was studied with use of a pump-probe technique. The theoretical and…”
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Anharmonic metastable charge transfer vibronic exciton in potassium tantalate by Liu, G.K., Vikhnin, V.S., Kapphan, S.E.

“…This study provides an experimental evidence of a non-linear state of charge transfer vibronic excitons (CTVE) and its well-defined metastable behaviors in…”
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Charge transfer model of metal–insulator phase transition and ultrafast optical response in VO2 by Vikhnin, V.S., Lysenko, S., Rua, A., Fernandez, F., Liu, H.

“…Metal–insulator phase transition (PT) and ultrafast optical response both in VO2 thin films are studied theoretically and experimentally. Three time scales for…”
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Hydrostatic pressure induced splitting of recombination luminescence band in KTaO3 : Manifestation of charge transfer vibronic exciton phase by VIKHNIN, V. S, KUTSENKO, A. B, KAPPHAN, S. E

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Semi-empirical calculations of the electronic and atomic structure of polarons and excitons in ABO 3 perovskite crystals by Eglitis, R.I., Kotomin, E.A., Borstel, G., Kapphan, S.E., Vikhnin, V.S.

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Percolation with constraints in the highly polarizable oxide KTaO :Li by Prosandeev, S.A., Vikhnin, V.S., Kapphan, S.

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Percolation with constraints in the highly polarizable oxide KTaO by Prosandeev, S.A., Vikhnin, V.S., Kapphan, S.

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Laser-induced “charge transfer–lattice” clusters and site-conversion near charged impurities by Vikhnin, V.S., Liu, G.K., Beitz, J.V.

“…Theoretical analysis of the laser excitation-induced conversion of the sites accompanied by memory effect both caused by Eu 3+ impurities in BaFCl crystal was…”
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An origin of light induced centers in the visible range in ferroelectric oxides : possible role of the states of charge transfer vibronic excitons by VIKHNIN, V. S, AVANESYAN, S, LIU, H, KAPPHAN, S. E

“…A light induced absorption peculiarity connected with an absorption peak in the visible range for SBN/Ce was detected. The analysis of these data together with…”
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Formation of UO 2(BO 3) 4 clusters in B 2O 3 glass due to charge transfer and vibronic effects by Liu, G.K., Vikhnin, V.S., Zhuang, H.Z., Hong, K.S., Beitz, J.V., Antonio, M.R., Soderholm, L., Williams, C.W.

“…Laser-induced excitation and fluorescence spectra and X-ray absorption fine structure (EXAFS) of the U 6+ L 3 edge (2p–5d) transitions indicate that uranyl…”
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Zero-phonon optical lines of impurity centers in ABO3 perovskite-like ferroelectrics by Trepakov, V.A, Vikhnin, V.S, Kapphan, S, Jastrabik, L, Licher, J, Syrnikov, P.P

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“Charge transfer–lattice” clusters induced by charged impurities by Vikhnin, V.S., Kaplyanskii, A.A., Kutsenko, A.B., Liu, G.K., Beitz, J.V., Kapphan, S.E.

“…A new type of self-consistent charge transfer–lattice states induced by charged impurities in their vicinity in ionic–covalent matrices are proposed and…”
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Self-Ordered Second-Component Nb Clusters in KNbxTa1-xO3 Solid Solutions and Their Physical Properties by Vikhnin, V. S., Eglitis, R. I., Markovin, P. A., Borstel, G.

“…Semi‐empirical Hartree‐Fock calculations using the intermediate neglect of the differential overlap (INDO) method, for self‐ordered cubic symmetry clusters of…”
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