arXiv subjects

Vladimir Zinovyev

Publications and source records attributed to Vladimir Zinovyev.

2 recordsLinked to original sources

arXiv2022

Resonant mode approximation of the scattering matrix of photonic crystal slabs near several Wood-Rayleigh anomalies

The resonant mode approximation of the scattering matrix is considered for calculating the optical properties of multilayered periodic structures within the formalism of the Fourier-modal method for two diffraction thresholds in close proximity of the spectral-angular range of interest. The developed approximation opens up possibilities for the fast calculation of the scattering matrix of these structures when describing the integral characteristics of spectra and dispersion curves containing high-Q resonances, such as bound states in the continuum.

physics.optics↗

arXiv2015

Electron localization in self-assembled Si/Ge(111) quantum dots

Electron localization in the Si/Ge heterosystem with Si quantum dots (QDs) was studied by transport and electron spin resonance (ESR) measurements. For Si QD structures grown on Ge(111) substrates, the ESR signal with g-factor $g=2.0022\pm0.0001$ and ESR line width $ΔH\approx1.2$ Oe was observed and attributed to the electrons localized in QDs. The g-factor value was explained by taking into account the energy band modification due to strain effects and quantum confinement. A strong Ge-Si intermixing in QD structures grown on Ge(001) is assumed to be main reason of unobserved ESR signal from QDs. The transport behavior confirms the efficient electron localization in Si QDs.

cond-mat.mtrl-sci↗