97 citations · 296 across the 21 of their papers we have counts for
21 papers
Structural, electronic, and optical properties of 6H-SiC layers synthesized by implantation of carbon ions into silicon
D. W. Boukhvalov, D. A. Zatsepin, D. Yu. Biryukov +3
Systematic studies of the gradual fabrication by means of carbon ion-implantation of high-quality 6H-SiC layers on silicon surfaces have been carried out. The fluence of carbon ion…
Formation of yttrium oxalate phase filled by carbon clusters on the surface of yttrium oxide films
D. W. Boukhvalov, D. A. Zatsepin, D. Yu. Biryukov +3
In the current paper, we report the results of surface modification of cubic Y2O3 films employing carbon-ion implantation. The characterization results demonstrate the formation of…
Uncommon 2D Diamond-like Carbon Nanodots Derived from Nanotubes: Atomic Structure, Electronic States and Photonic Properties
D. W. Boukhvalov, D. A. Zatsepin, Yu. A. Kuznetsova +2
In this article, we report the results of relatively facile fabrication of carbon nanodots from single-walled and multi-walled carbon nanotubes (SWCNT and MWCNT). The results of X-…
Schottky-diode design for the world's leading telecommunication
Chi Ho Wong, Frank Leung Yuk Lam, Xijun Hu +1
The Schottky diode, BN/GaN layered composite contacting to bulk aluminum, is theoretically plausible to harvest wireless energy above X-band. According to our first principle calcu…
Chemical instability of free-standing boron monolayers and properties of oxidized borophene sheets
Xue Lei, Anatoly F. Zatsepin, Danil W. Boukhvalov
In this work we report results of step-by-step modeling of the oxidation of free-standing boron monolayers of different types. Results of the calculations demonstrate that the proc…
Enormous enhancement of p-orbital magnetism and band gap in the lightly doped carbyne
C. H. Wong, R. Lortz, A. F. Zatsepin
This paper presents a path to tailor adapted magnetic and optical properties in carbyne. Although p-orbital magnetism is generally much weaker than d-orbital magnetism, we demonstr…
Atomic and electronic structure of graphene oxide/Cu interface
Danil W. Boukhvalov, Ernst Z. Kurmaev, Ewelina Urbańczyk +8
The results of X-ray photoemission (XPS) and valence bands spectroscopy, optically stimulated electron emission (OSEE) measurements and density functional theory based modeling of…
Electron-electron interactions of the multi-Cooper-pairs in the 1D limit and their role in the formation of global phase coherence in quasi-one-dimensional superconducting nanowire arrays
C. H. Wong, E. A. Buntov, A. F. Zatsepin +1
Nanostructuring of superconducting materials to form dense arrays of thin parallel nanowires with significantly large transverse Josephson coupling has proven to be an effective wa…
Revisiting the semi-flexible entangled chains of polymer in the carbyne model
C. H. Wong, L. Xue, E. A. Buntov +1
The Monte Carlo carbyne model is modified to investigate the glass transition of the semi-flexible entangled polymer chains. The stochastic bombardment between monomers are monitor…
Stability of boron-doped graphene/copper interface: DFT, XPS and OSEE studies
D. W. Boukhvalov, I. S. Zhidkov, A. I. Kukharenko +4
Two different types of boron-doped graphene/copper interfaces synthesized using two different flow rates of Ar through the bubbler containing the boron source were studied. X-ray p…
Band alignments of electronic energy structure in epitaxially grown \b{eta}-Ga2O3 layers
D. A. Zatsepin, D. W. Boukhvalov, A. F. Zatsepin +4
Gallium oxide epitaxial layers grown on native substrates and basal plane sapphire were characherized by X-ray phtotelectron and optical reflectance spectroscopies. The XPS electro…
Electronic structure, charge transfer, and intrinsic luminescence of gadolinium oxide nanoparticles: Experiment and theory
D. A. Zatsepin, D. W. Boukhvalov, A. F. Zatsepin +6
The cubic (c) and monoclinic (m) polymorphs of Gd2O3 were studied using the combined analysis of several materials science techniques - X-ray diffraction (XRD), scanning electron m…
The MRO-accompanied modes of Re-implantation into SiO2-host matrix: XPS and DFT based scenarios
A. F. Zatsepin, D. A. Zatsepin, D. W. Boukhvalov +3
The following scenarios of Re-embedding into SiO2-host by pulsed Re-implantation were derived and discussed after XPS-and-DFT electronic structure qualification: (i) low Re-impurit…
Enhanced clustering tendency of Cu-impurities with a number of oxygen vacancies in heavy carbon-loaded TiO2 - the bulk and surface morphologies
D. A. Zatsepin, D. W. Boukhvalov, E. Z. Kurmaev +4
The over threshold carbon-loadings (~50 at.%) of initial TiO2-hosts and posterior Cu-sensitization (~7 at.%) was made using pulsed ion-implantation technique in sequential mode wit…
Superconductivity in ultra-thin carbon nanotubes and carbyne-nanotube composites: an ab-initio approach
C. H. Wong, E. A. Buntov, R. E. Kasimova +1
The superconductivity of the 4-angstrom single-walled carbon nanotubes (SWCNTs) was discovered more than a decade ago, and marked the breakthrough of finding superconductivity in p…
Effect of symmetry on the electronic DOS, charge fluctuations and electron-phonon coupling in carbon chains
C. H. Wong, J. Y. Dai, M. B. Guseva +3
A theoretical model is provided to address the parameters influencing the electronic properties of kink-structured carbon chain at 0K. It is studied by the principle of DFT and sol…
Simulation of chemical bond distributions and phase transformation in carbon chains
C. H. Wong, E. A. Buntov, V. N. Rychkov +2
In the present work we develop a Monte Carlo algorithm of the carbon chains ordered into 2D hexagonal array. The chemical bond of the chained carbon is computed from 1K to 1300K. O…
Sn-loss effect in a Sn-implanted a-SiO2 host-matrix after thermal annealing: A combined XPS, PL, and DFT study
D. A. Zatsepin, A. F. Zatsepin, D. W. Boukhvalov +2
Amorphous a-SiO2 host-matrices were implanted with Sn-ions with and without posterior thermal tempering at 900 °C for 1 hour in ambient air. X-ray photoelectron spectroscopy analys…
Electronic structure and photoluminescence properties of Zn-ion implanted silica glass before and after thermal annealing
D. A. Zatsepin, A. F. Zatsepin, D. W. Boukhvalov +3
The results of XPS core-level and valence band measurements, photoluminescence spectra of a-SiO2 implanted by Zn-ions (E=30 keV, D=1*1017 cm^-2) and Density Functional Theory calcu…
Octahedral conversion of a-SiO2-host matrix by pulsed ion implantation
D. A. Zatsepin, A. F. Zatsepin, D. W. Boukhvalov +5
This is the abstract. The results of measurements of X-ray photoelectron spectra (XPS) of a-SiO2-host material after pulsed implantation with [Mn+] and [Co+, Mn+]-ions as well as D…
Electronic band gap reduction and intense luminescence in Co and Mn ion-implanted SiO
R. J. Green, D. A. Zatsepin, D. J. St. Onge +4
Cobalt and manganese ions are implanted into SiO over a wide range of concentrations. For low concentrations, the Co atoms occupy interstitial locations, coordinated with oxyge…