Zobrazeno 1 - 10
of 104
pro vyhledávání: '"Ponosov, Yu."'
Publikováno v:
JETP Lett. 119, 518 (2024)
Raman spectroscopy together with density functional calculations were used to study lattice dynamics in a layered honeycomb cobaltite Na$_3$Co$_2$SbO$_6$, which can host a field-induced phase related with the Kitaev physics. We show that there develo
Externí odkaz:
http://arxiv.org/abs/2403.16943
Autor:
Ponosov, Yu. S., Streltsov, S. V.
We measured the temperature dependence of low-frequency Raman spectra in Li$_2$RuO$_3$, and observed multipeak quasielastic scattering in the Ru honeycomb polarizations below and above the magnetostructural transition temperature. We attribute this s
Externí odkaz:
http://arxiv.org/abs/2006.03792
Publikováno v:
Phys. Rev. B 99, 085103 (2019)
We report results of the Raman measurements for SrRu$_2$O$_6$ having extraordinary high N$\acute{\textrm{e}}$el temperature for a layered material. No additional phonon modes were detected at the temperature of magnetic transition thus excluding lowe
Externí odkaz:
http://arxiv.org/abs/1812.00560
Publikováno v:
Phys. Rev. B 97, 184108 (2018)
The effect of pressure on the zone-center optical phonon modes and the elastic properties of hafnium has been studied by both experimental (Raman scattering) and theoretical (DFT) approaches. It was found an anomaly dependence of the phonon frequency
Externí odkaz:
http://arxiv.org/abs/1802.07531
Autor:
Boukhvalov, D. W., Bazylewski, P. F., Kukharenko, A. I., Zhidkov, I. S., Ponosov, Yu. S., Kurmaev, E. Z., Cholakh, S. O., Lee, Y. H., Chang, G. S.
We report the results of X-ray spectroscopy and Raman measurements of as-prepared graphene on a high quality copper surface and the same materials after 1.5 years under different conditions (ambient and low humidity). The obtained results were compar
Externí odkaz:
http://arxiv.org/abs/1707.09698
Autor:
Ponosov, Yu. S., Streltsov, S. V.
We report a Raman study of the effect of temperature on the self-energies of optical phonons in a number of transition metals with hexagonal-close-packed structure. Anisotropic softening of phonon energies and narrowing of phonon linewidths with incr
Externí odkaz:
http://arxiv.org/abs/1611.10006
Electronic Raman scattering and optical phonon self-energies are studied on single crystals of $LuB_{12}$ with different isotopic composition in the temperature region 10-650K and at pressures up to 10 GPa. The shape and energy position of the spectr
Externí odkaz:
http://arxiv.org/abs/1608.02379
Akademický článek
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Autor:
Ponosov, Yu. S., Streltsov, S. V.
Publikováno v:
Phys. Rev. B 86, 045138 (2012)
We report the first systematic measurements of the Raman scattering by electrons in elemental metals of Al, Mo, Nb, Os, Pb, Re, Ta, Ti, V, W and metallic compound La$B_6$. Experimental spectra are modelled on the base of the band structures, calculat
Externí odkaz:
http://arxiv.org/abs/1204.4582
We present the first Raman investigation of icosahedral quasicrystals. Broad structured bands in the energy range up to ~ 500 $cm^{-1} have been observed in a series of AlFeCu, AlPdMn and AlPdRe systems. Original information on the vibrational densit
Externí odkaz:
http://arxiv.org/abs/0908.4535