Search Results - "Vikhnin, Valentin"

Transient Charge Trapping in Eu3+ -Doped Nanocomposites by Ultrafast Laser Excitation by Liu, Huimin, Lysenko, Sergie, Jimenez, Jose, Vikhnin, Valentin

“…O621; Eu3+ was incorporated as probe ions into nanocomposite glasses, such as metal silver doped phosphate glass and crystalline nanocomposites Si-enriched…”
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Critical effects in optical response due to charge transfer vibronic excitons and their structure in perovskite-like systems by Jia, Weiyi, Vikhnin, Valentin S, Liu, Huimin, Kapphan, Siegmar, Eglitis, Roberts, Usvyat, Denis

“…A mechanism for bilinear interaction between high-frequency light-induced electronic polarization and low-frequency soft lattice polarization is proposed. It…”
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Charge transfer vibronic excitons in ferroelectric oxides: experiment and theory by Vikhnin, Valentin S, Liu, Huimin, Jia, Weiyi, Kapphan, Siegmar

“…Review of the charge transfer vibronic excitons (CTVE) study on the basis of optical response investigations in ferroelectric oxides is presented. CTVE is the…”
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Dipole-type local configuration instability and charge transfer control as a theoretical background of a new long-memory effect for germanium-related centres in α-quartz by Vikhnin, Valentin S., Leyderman, Alexander

“…A theoretical background of a new long-memory effect detected by A. Leyderman, J.A. Weil, and P.S. Rao [1] in α-quartz with paramagnetic [GeO 4 ] − Li +…”
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Charge transfer vibronic state formation of localized intermediate Jahn-Teller exciton: Germanium -related centres in α-quartz by Vikhnin, Valentin S., Leyderman, Alexander

“…It is shown that the origin of triad-type electronic-hole states with dipole moment for a network of Ge-related local centres in α-quartz is connected with…”
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Transient charge trapping in Eu(3+)-doped nanocomposites by ultrafast laser excitation by Liu, Huimin, Lysenko, Sergie, Jimenez, Jose, Vikhnin, Valentin

“…Eu(3+) was incorporated as probe ions into nanocomposite glasses, such as metal silver doped phosphate glass and crystalline nanocomposites Sienriched SiO(2)…”
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Charge transfer vibronic excitons in transient optical response: Critical dependence near ferroelectric phase transition of KTa 1- x Nb x O 3 by Vikhnin, Valentin S., Liu, Huimin

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Charge transfer vibronic excitons in transient optical response: Critical dependence near ferroelectric phase transition of KTa1-x Nb x O3 by Vikhnin, Valentin S., Liu, Huimin

“…Charge transfer vibronic excitons (CTVE) in ionic-covalent solid states are considered as an origin of the transient optical response (OR). The pulsed…”
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Mechanisms of off-center ion behavior in oxygen-octahedral perovskite-type ferroelectrics by Vikhnin, V. S., Ruzanova, E. A.

“…A mechanism of the off-center impurity-ion behavior induced by the quadratic Jahn-Teller effect on polar distortions and (or) joint action of the local…”
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Vibronic Frenkel exciton in a soft-mode crystal by Vikhnin, V. S., Ruzanova, E. A.

“…The pair electron-hole Jahn-Teller effect, which is realized on degenerate states of a vibronic Frenkel exciton (VFE) in soft-mode crystals, is considered. It…”
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Optical and Nonlinear Optical Response of Light Sensor Thin Films by Liu, H., Rua, A. J., Vasquez, O., Vikhnin, V. S., Fernandez, L. F.E., Fonseca, F., Resto, O., Weisz, S. Z.

“…For potential ultrafast optical sensor application, both VO2 thin films andnanocomposite crystal-Si enriched SiO2 thin films grown on fused quartz substrates…”
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Charge transfer vibronic excitons in transient optical response: Critical dependence near ferroelectric phase transition of KTa1-x NbxO3 by VIKHNIN, Valentin S, HUIMIN LIU

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SHG properties of pure and doped incipient ferroelectrics KTaO3 and SrTiO3 under applied electric fields by der Horst, Christian Auf, Licher, Jörg, Kapphan, Siegmar E., Vikhnin, Valentin, Prosandeyev, Sergey

“…The investigation of the incipient ferroelectric systems KTO and STO at low temperature with optical second harmonic generation (SHG) using a Nd:YAG-laser…”
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Possibile IR-laser effect, tera-herz phonon generation, and long-term memory model for Ge-Li local centres in α-quartz by VIKHNIN, Valentin S, LEYDERMAN, Alexander

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Possibile IR-laser effect, Tera-Herz phonon generation, and long-term memory model for Ge-Li local centres in α-quartz by Vikhnin, Valentin S., Leyderman, Alexander

“…The new long-term memory effect on [GeO4] − Li + local centres in α-quartz discovered earlier by A. Leyderman, J. A. Weil, and P. Rao [1] is shown to be…”
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SHG properties of pure and doped incipient ferroelectrics KTaO 3 and SrTiO 3 under applied electric fields by der Horst, Christian Auf, Licher, Jörg, Kapphan, Siegmar E., Vikhnin, Valentin, Prosandeyev, Sergey

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Dipole-type charge transfer instability and new long-memory effect due to polar cluster formation near local centres in α-quartz by VIKHNIN, VALENTIN S., LEYDERMAN, ALEXANDER, Lemanov, V. V.

“…A theoretical background of a new long-term memory effect detected by A. Leyderman, J.A. Weil, and P.S. Rao [1] in α-quartz with [GeO 4 ] − Li + centres is…”
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Dipole-type charge transfer instability and new long-memory effect due to polar cluster formation near local centres in α-quartz by VIKHNIN, Valentin S, LEYDERMAN, Alexander

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