STM manipulation of individual chlorine atoms on the chlorinated Si(100) surface
This project is aimed at creating and studying local structures on the Si(100)-2x1-Cl surface. A scanning tunneling microscope (STM) will be used as the main tool for manipulating local structures and studying them. The chlorinated silicon surface is considered as a prototype of the interaction of halogens with the surface of semiconductors, therefore, new knowledge about the structures on this surface determines the fundamental significance of the project. The possibility of applying the obtained results to solve the problem of arranging impurities with atomic precision determines the applied significance of the project.
Publications:
T.V. Pavlova, V.M. Shevlyuga, B.V. Andryushechkin, K.N. Eltsov, Chlorine insertion and manipulation on the Si(100)-2x1-Cl surface in the regime of local supersaturation, Physical Review B, 101, 235410 (2020), DOI: 10.1103/PhysRevB.101.235410 | arXiv.
T.V. Pavlova, V.M. Shevlyuga, B.V. Andryushechkin, G.M. Zhidomirov, K.N. Eltsov, Local removal of silicon layers on Si(100)-2х1 with chlorine-resist STM lithography, Applied Surface Science, 509 (2020) 145235. https://doi.org/10.1016/j.apsusc.2019.145235 | arXiv
T.V. Pavlova, G.M. Zhidomirov, K.N. Eltsov, First-Principle Study of Phosphine Adsorption on Si(001)-2x1-Cl, Journal of Physical Chemistry C, 122 (2018) 1741-1745. https://doi.org/10.1021/acs.jpcc.7b11519.
T.V. Pavlova, E. S. Skorokhodov, G.M. Zhidomirov, K.N. Eltsov, Ab Initio Study of the Early Stage of Si Epitaxy on the Chlorinated Si(100) Surface, Journal of Physical Chemistry C, 123 (2019) 19806-19811. (2019). DOI: 10.1021/acs.jpcc.9b06128 | arXiv
Atomic structures and phase transitions at early stages of metal oxidation: STM and DFT study of copper and silver monocristalline surfaces in ultrahigh vacuum
Recent publications:
B.V. Andryushechkin, V.M. Shevlyuga, T. V. Pavlova, G. M. Zhidomirov, K.N.Eltsov, STM and DFT Study of Chlorine Adsorption on the Ag(111)-p(4x4)-O Surface, Journal of Physical Chemistry C, 122 (2018) 28862-28867.
B.V. Andryushechkin, V.M. Shevlyuga, T. V. Pavlova, G. M. Zhidomirov, K.N.Eltsov, Adsorption of molecular oxygen on the Ag(111) surface: A combined temperature-programmed desorption and scanning tunneling microscopy study, The Journal of Chemical Physics 148 (2018) 244702.
B.V. Andryushechkin, V.M. Shevlyuga, T. V. Pavlova, G. M. Zhidomirov, K.N.Eltsov, Adsorption of O2 on Ag(111): Evidence of Local Oxide Formation, Physical Review Letters 117 (2016) 056101.
Growth, intercalation, doping, and local modification of graphene on the Ni(111) surface
The essence of the method used to form a graphene monolayer is the accumulation of carbon atoms under the nickel surface at room temperature and the subsequent carbon segregation on the nickel surface during heating. At each stage of the process, complete control of the reaction of graphene synthesis is possible by changing the temperature, heating time, and dose of the adsorbate (propylene). As a result, it is possible to create a single-domain (single-crystal) monolayer of graphene of a large area (5x5 mm or more), which upon subsequent intercalation with gold shows an ideal dispersion at K point of the Brillouin zone. Graphene synthesis in this way allows to study the features of graphene growth at the atomic level, change the atomic composition of graphene (doping), intercalate it, and locally modify using a scanning tunneling microscope.
Publications:
S. L. Kovalenko, T. V. Pavlova, B. V. Andryushechkin, G. M. Zhidomirov, K.N. Eltsov, Ni Doped Epitaxial Graphene on Ni(111), Physics of Wave Phenomena, 28(3) (2020) in press, arXiv:2007.07603.
S. L. Kovalenko, T. V. Pavlova, B. V. Andryushechkin, K.N. Eltsov, Temperature-Programmed Growth of Quasi-Free-Standing N-Doped Graphene Single Crystals from Acetonitrile Molecules, Jetp Lett., 111 (2020) 591-597. https://doi.org/10.1134/S0021364020100100
S. L. Kovalenko, B.V. Andryushechkin, K.N. Eltsov, STM study of oxygen intercalation at the graphene/Ni(111) interface, Carbon, 164 (2020) 198-206. DOI: 10.1016/j.carbon.2020.03.054
T.V. Pavlova, S. L. Kovalenko, K.N. Eltsov, Room Temperature Propylene Dehydrogenation and Linear Atomic Chain Formation on Ni(111), Journal of Physical Chemistry C, 124 (2020) 8218-8224. DOI: 10.1021/acs.jpcc.9b11942 | arXiv
S. L. Kovalenko, T. V. Pavlova, B. V. Andryushechkin, O. I. Kanishcheva, K. N. Eltsov, Epitaxial growth of a graphene single crystal on the Ni(111) surface, JETP Letters 105 (2017) 185-188.
Halogen adsorption on metal surfaces
This project is devoted to the study of the interaction of halogens with metal surfaces. The main research methods are scanning tunneling microscopy and calculations based on the density functional theory. Fundamental knowledge of the processes occurring at the gas-solid interface is of great practical importance in catalysis. Knowledge of the composition and surface structure of the catalysts, active centers, and binding energies allows to calculate the catalytic activity and characterize the stages of the heterogeneous reaction. In the TMAS group, reactions of halogenation of copper, silver, gold, and nickel were chosen as the object of study. In heterogeneous catalysis, halogen is often a reaction promoter, and Cu, Ag, Au, and Ni are catalysts.
Recent publications:
Nikita Komarov, Tatiana V. Pavlova, Boris V. Andryushechkin, Iodine Adsorption on Ni(110): 2D Phase Transitions And NiI2 Growth, Journal of Physical Chemistry C, 123 (2019) 27659-27665. DOI: 10.1021/acs.jpcc.9b08687
B.V. Andryushechkin, T.V. Pavlova, K.N. Eltsov, Adsorption of halogens on metal surfaces, Surface Science Reports 73 (2018) 83-115.
B.V. Andryushechkin, (2016) Halogen Adsorption on Metals, in Surface and Interface Science, Volume 5: Solid-Gas Interfaces I (ed K. Wandelt), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, Germany (2016) doi: 10.1002/9783527680573.ch35
N.S. Komarov, T.V.Pavlova, B.V. Andryushechkin, Iodine adsorption on Ni(111): STM and DFT study, Surface Science 651 (2016) 112-119.
V.V. Cherkez, V.V. Zheltov, C. Didiot, B. Kierren, Y. Fagot-Revurat, D. Malterre, B.V. Andryushechkin, G.M. Zhidomirov, K.N. Eltsov, Self-ordered nanoporous lattice formed by chlorine atoms on Au(111), Physical Review B 93 (2016) 045432
T. V. Pavlova, B.V. Andryushechkin, G.M. Zhidomirov, First-Principle Study of Adsorption and Desorption of Chlorine on Cu(111) Surface: Does Chlorine or Copper Chloride Desorb? Journal of Physical Chemistry C (2016) 2829-2836.