Articole din publicaţii internaţionale: Recent submissions

  • Excitonic spectra and energy band structure of ZnAl2Se4 crystals 
    SYRBU, N. N.; ZALAMAI, V. V.; TIRON, A. V.; TIGINYANU, I. M. (Elservier, 2015)
    Absorption, reflection and wavelength modulated reflection spectra were investigated in ZnAl2Se4 crystals. The energy positions of ground and excited states for three excitonic series (А, В and С) were determined. The main ...
  • Excitonic spectra and band structure of CdGa2Se4 birefractive crystals 
    SYRBU, N. N.; STAMOV, I. G.; PARVAN, V. I.; ZALAMAI, V. V.; TIGINYANU, I. M. (Elservier, 2013)
    We report on the intersection of spectral dependences of refractive indices no and ne at the wavelengths 546nm (λ0) and 450nm (λ01) in CdGa2Se4 single crystals. The value of difference Δn=ne−no is equal to zero at the ...
  • Excitonic polaritons of zinc diarsenide single crystals 
    SYRBU, N. N.; STAMOV, I. G.; ZALAMAI, V. V.; DOROGAN, A. (Elservier, 2017)
    Excitonic polaritons of ZnAs2 single crystals had been investigated. Parameters of singlet excitons with Г2¯(z) symmetry and orthoexcitons 2Г1¯(y)+Г2¯(x) had been determined. Spectral dependencies of ordinary and extraordinary ...
  • Excitonic Polaritons in ZnAs2 
    SYRBU, Nicolae; STAMOV, Ivan; DOROGAN, Andrei; NEMERENCO, Lucretia (IOP Publishing, 2006)
    The allowed exciton transitions n=1,2,3 were revealed in the reflection spectra of ZnAs2 monocrystals at 10 K. Transverse and longitudinal exciton energies, longitudinal splitting value, translation and reduced exciton ...
  • Exciton-phonon spectra in CuIn/sub 1-x/Ga/sub x/S/sub 2/ crystals 
    SYRBU, N. N.; NYARI, T.; BOGDANASH, M.; TEZLEVAN, V. E. (IEEE, 1999)
    In the present paper the excitonic reflectivity and the wavelength derivative reflection (WDR) study of CuGa/sub x/In/sub x-1/Se/sub 2/ solid solutions are presented. The states n=1, n=2 and n=3 of A, B, C exciton series ...
  • Экситон-фононные спектры в дифосфиде цинка 
    СЫРБУ, Н. Н.; ХАЧАТУРОВА, С. Б. (Ioffe Institute, 1985)
    В модулированных по длине волны спектрах поглощения моноклинных кристаллов ди-фосфида цинка в поляризации Ej_c выявлены запрещенные непрямые переходы в экситон-ную зону 72=1 с участием £0-фононов симметрии Г4 . По спектрам ...
  • Exciton-phonon spectra in CuIn/sub 1-x/Ga/sub x/S/sub 2/ crystals 
    RADAUTSAN, S. I.; SYRBU, N. N.; CRETU, R. V.; TEZLEVAN, V. E. (IEEE, 1997)
    In this work, the wavelength derivative reflection (WDR) spectra of CuIn/sub 1-x/Ga/sub x/S/sub 2/ crystals have been investigated in the region of A, B and C series. The n=1, n=2 and n=3 states are determined and contours ...
  • Exciton - phonon spectra and energy band structure of crystals 
    SYRBU, N. N.; BOGDANASH, M.; TEZLEVAN, V. E.; STAMOV, I. G. (IOP Publishing, 1997)
    The excitonic reflectivity spectra and the wavelength derivative reflection spectra have been investigated. The n = 1, n = 2 and n = 3 states of the A, B and C exciton series are determined. The exciton binding energies ...
  • Exciton spectra and energy band structure of CuGaSe2 single crystals 
    LEVCHENKO, S.; SYRBU, N. N.; TEZLEVAN, V. E.; ARUSHANOV, E.; MERINO, J. M.; LEÓN, M. (IOP Publishing, 2008)
    Photoreflectivity, wavelength modulation spectroscopy and photoluminescence measurements of CuGaSe2 are used to determine the exciton and band parameters as well as the energy band structure of CuGaSe2 at photon energies ...
  • Exciton spectra and energy band structure of Cu2ZnSiSe4 
    GUC, M.; LEVCENKO, S.; DERMENJI, L.; GURIEVA, G.; SCHORR, S.; SYRBU, N. N.; ARUSHANOV, E. (Elservier, 2014)
    Exciton spectra are studied in Cu2ZnSiSe4 single crystals at 10 and 300K by means of reflection spectroscopy. The exciton parameters, dielectric constant and free carriers effective masses are deduced from experimental ...
  • Exciton and phonon spectra of acoustooptic Tl3AsS3 crystals 
    GITSU, D. V.; SYRBU, N. N.; PRUNICH, P. I.; POPESKU, A. A. (Springer Nature Switzerland, 2001)
    The λ-modulated exciton reflection spectra of Tl3AsS3 crystals are investigated at 8 and 77 K, in which the ground (n=1) and excited (n=2, 3) exciton states are revealed. Taking into account the spatial dispersion, the ...
  • Энергетическая структура зон некоторых кристаллов группы AIIBIVCV2 
    КЕСАМАНЛЫ, Ф. П.; КРОИТОРУ, С. Г.; РУДЬ, Ю. В.; СОБОЛЕВ, В. В.; СЫРБУ, Н. Н. (Russian Academy of Sciences, 1965)
    Общее и детальное сходство спектров отражения кристаллов ZnSnAs2 , ZnSiP2 , ZnSiAs2 и групп A I V , A n l B v убедительно свидетельствует о справедливости предположений работы о весьма большом сходстве структур энергетических ...
  • Energy Band Structure of the Tetragonal Crystals ZnP2 and CdP2 
    SOBOLEV, V. V.; SYRBU, N. N.; SUSHKEVICH, T. N. (John Wiley & Sons, Inc., 1971)
    The anisotropic spectra of edge absorption, photoconductivity, emission, and reflectivity of the tetragonal ZnP2 and CdP2 crystals have been experimentally investigated in the range 1 to 12.5 eV. The selection rules for ...
  • Energy Band Structure of CuInS2 Crystals 
    SYRBU, N. N.; CRETU, R. V.; TEZLEVAN, V. E. (John Wiley & Sons, Inc., 1998)
    In this work the reflectivity spectra and wave-length derivative reflectivity (WDR) spectra of CuInS2 crystals have been investigated in the region E ≥ Eg. The n = 1, n = 2 and n = 3 excitonic states are determined and ...
  • Energetic band structure of Zn3P2 crystals 
    STAMOV, I. G.; SYRBU, N. N.; DOROGAN, A. V. (Elservier, 2013)
    Optical functions n, k, ε1, ε2 and d2ε2/dE2 have been determined from experimental reflection spectra in the region of 1–10eV. The revealed electronic transitions are localized in the Brillouin zone. The magnitude of valence ...
  • Asigurarea calităţii şi valabilității pâinii cu făină de porumb 
    BANTEA-ZAGOREANU, Valentina; GHENDOV-MOŞANU, Aliona (Universitatea de Stat „Bogdan Petriceicu Hasdeu“, Cahul, 2017)
    The subject of this paper relates to the investigation of the composition of high quality wheat flour bread with the addition of corn flour, in order to analyze the methods of controlling bread diseases during preservation. ...
  • Energetic band structure and optical spectra of CdGa2Se4, CdGa2S4 and CdAl2S4 crystals 
    SYRBU, N. N.; TEZLEVAN, V. E. (Elservier, 1995)
    Reflectivity spectra of CdGa2Se4, CdGa2S4 and CdAl2S4 crystals have been investigated in the range 1–6 eV for the polarization E∥c and E⊥c at 300 and 77 K. The valence band splitting caused by spin-orbital interaction and ...
  • Electronic and Vibrational Reflectivity and Absorption Spectra in ZrS2Crystals 
    SYRBU, Nicolae N.; CEBOTARI, Vladimir Z.; MOLDOVEANU, Nicolae P. (IOP Publishing, 1996)
    The study of both the absorption and λ-modulated absorption spectra have been investigated in the region of the lowest band gap. The reflectivity spectra of ZrS2 are presented in the region E>E g (1.5 to 6.5 eV). The IR ...
  • Electronic and optical properties of HgIn2S4 thiospinels 
    SYRBU, N. N.; TIRON, A.; ZALAMAI, V. V. (IOP Publishing, 2019)
    Photoluminescence (PL), transmission (T), reflection (R), wavelength modulated transmission (ΔT/Δλ) and reflection (ΔR/Δλ) spectra of thiospinel HgIn2S4 crystals were investigated in temperature interval form 10 to 300 K. ...
  • Влияние нарушения стехиометрии состава дифосфида цинка на спектры свободного экситона 
    РАДАУЦАН, С. И.; СЫРБУ, Н. Н.; ХАЧАТУРОВА, С. Б.; СТРАТАН, Г. И.; ПЕЕВ, Л. Г. (Russian Academy of Sciences, 1973)
    В настоящей работе исследованы экситонные водородоподобные состояния двух новых типов кристаллов ZnP2 в поляризациях Е || с (спектры отражения) и Е 1 с (спектры поглощения) и сопоставлены с оптическими спектрами. Показано ...

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