activity
20092023
most citedTensile strain induced changes in the optical spectra of SrTiO3 epitaxial thin films

33 citations · 69 across the 7 of their papers we have counts for

collaborators

7 papers

cond-mat.mtrl-sci2023★ 8 cited

Morphology and Optical Properties of Thin Cd3As2 Films of a Dirac Semimetal Compound

Natalia Kovaleva, Ladislav Fekete, Dagmar Chvostova +1

Using atomic-force microscopy (AFM) and wide-band (0.02-8.5 eV) spectroscopic ellipsometry techniques we investigated morphology and optical properties of Cd3As2 films grown by non…

cond-mat.str-el2023★ 2 cited

Bi layer properties in the Bi-FeNi GMR-type structures probed by spectroscopic ellipsometry

Natalia Kovaleva, Dagmar Chvostova, Ladislav Fekete +1

Bismuth (Bi) having a large atomic number is characterized by the strong spin-orbit coupling (SOC) and is a parent compound of many 3D topological insulators (TIs). The ultrathin B…

cond-mat.mtrl-sci2023★ 6 cited

Bismuth layer properties in the ultrathin Bi-FeNi multilayer films probed by spectroscopic ellipsometry

N. N. Kovaleva, D. Chvostova, O. Pacherova +6

Using wide-band (0.5-6.5 eV) spectroscopic ellipsometry we study ultrathin [Bi(0.6-2.5 nm)-FeNi(0.8,1.2 nm)]N multilayer films grown by rf sputtering deposition, where the FeNi lay…

cond-mat.str-el2021★ 12 cited

Localization Phenomena in Disordered Tantalum Films

Natalia Kovaleva, Dagmar Chvostova, A. Dejneka

Using dc transport and wide-band spectroscopic ellipsometry techniques we study localization phenomena in highly disordered metallic β-Ta films grown by rf sputtering deposition. T…

cond-mat.str-el2020★ 8 cited

Control of Mooij correlations at the nanoscale in the disordered metallic Ta - nanoisland FeNi multilayers

N. N. Kovaleva, F. V. Kusmartsev, A. B. Mekhiya +12

Localisation phenomena in highly disordered metals close to the extreme conditions determined by the Mott-Ioffe-Regel (MIR) limit when the electron mean free path is approximately…

cond-mat.mtrl-sci2019

Efficient Green Emission from Edge States in Graphene Perforated by Nitrogen Plasma Treatment

N N Kovaleva, D Chvostova, Z Potůček +10

Plasma functionalization of graphene is one of the facile ways to tune its doping level without the need for wet chemicals making graphene photoluminescent. Microscopic corrugation…

cond-mat.mtrl-sci2009★ 33 cited

Tensile strain induced changes in the optical spectra of SrTiO3 epitaxial thin films

A. Dejneka, M. Tyunina, J. Narkilahti +4

Effect of biaxial tensile strains on optical functions and band edge transitions of ultra thin epitaxial films was studied using as an example a 13 nm thick SrTiO3 films deposited…