Research area:

Lattice Dynamics, surface waves, heat exchange between different media and Fano resonance, quasiparticle spectra and their physical characteristics in the quasi-low-dimensional systems with defects, polarons in semiconductors.

• Propagation and localization of vibrations in infinite and semi-infinite crystals, surface waves, heat transfer between different media;
• Vibration characteristics of real crystals;
• Dynamics of strongly anisotropic crystal structures, and quasi-low-dimensional lattices;
• Quasi-particle spectra and vibration characteristics of nanoclusters and other nanosystems.

The main achievements:

• Dynamics of Highly Anisotropic (Quasi Low Dimensional) and Multi Layer Crystals
• The mechanism of Kapitsa thermal resistance was proposed.
• The condition of creation and characteristics of localized states connected with point impurities and continuous defects (twins, interfaces, adsorbed layers, etc.) were investigated and analyzed in detail.
• Shear waves localized near a mono-atomic layer adsorbed on the free surface of a strongly anisotropic layered crystal are studied at the microscopic level using a vector lattice model with translational and rotational invariance and elastic stability. It is shown that in some cases a non-central inter-atomic interaction results in the appearance of surface shear waves of a special type with one or two termination points and a damping parameter which is a non-monotonic function the two–dimensional wave vector.
• Multi-channel resonance transmission of phonons through the interface of the point contact was studied using the theory of capillary effects. We showed that anomalous peaks of the reduced heat flow at low temperatures are induced by the resonance transport of phonons through different layers of impurity atoms. Characteristics of channels of the phonon heat flow are calculated. The data obtained were in good agreement with the experimental results.
• Properties of polaron in functionalized nanowires.

Selected publications:

1. В.И.Пересада, Е.С.Сыркин Новый метод нахождения локализованных у поверхности кристалла колебательных состояний. ФНТ, 1977, Т.3 №2, с.222-236.
2. И.М.Гельфгат, Е.С.Сыркин К теории скачка Капицы. ФНТ, 1978, Т.4, №2, с.141-147.
3. А.М.Косевич, Ю.А.Косевич, Е.С.Сыркин Обобщенные волны Рэлея и геометрия изочастотных поверхностей звуковых колебаний в кристаллах. ЖЭТФ, 1985, Т.88, №3, с.1089-1097.
4. S.B.Feodosyev, I.A.Gospodarev, E.S.Syrkin, Anomalies of Linear Expansion Coefficient in Highly Anisotropic Crystals at Low Temperature, Phys, Stat. Sol (b), 150, K19, 1988.
5. Yu.A. Kosevich, E.S. Syrkin Application of surface acoustic waves to direct measurement of the parameters of superfluid Helium thin films. J. of Phys: Condens. Matter , 1990, v.2, N22, p.5047-5052.
6. T.G. Petrova and E.S. Syrkin, Surface spin waves in Heisenberg’s ferromagnets (review article), Low Temp. Phys. 17, No 4, 411, 1991.
7. Yu. S. Kyvshar, E.S.Syrkin Nonlinear surface elastic waves in discrete media. Phys.Lett.A 1991, v.150,№ 3,4, p.155-168.
8. Yu. A. Kosevich, E.S. Syrkin Collective oscillation s of twin-boumdaries HTSC as an acoustic analogue of two-dimensional plasmons. Phys.Rev.B. 1991, v.43 №1, p.323=329.
9. Ю.Ф. Комник, Е.Ю. Беляев, Е.С .Сыркин Об аномальной температурной зависимости времени электрон-фононной релаксации в тонких пленках, расположенных на подложке. ФНТ, 1996, Т.22, №1, с. 107-110.
10. A.S.Kovalev, E.S.Syrkin Surface solitons in nonlinear elastic media, Surface Science, 1996, v. 346, p.337-345.
11. A.M. Kosevich, V.V.Voinova, E.S. Syrkin, Acoustical sensors using Langmuir-Blodgett films . Acoustical Imaging, v. 21, 1995, pp.191-199. Plenum Publishing Corp., J.P.Jones ed., New-York-London.
12. A.M. Kosevich, Yu.A. Kosevich, E.S. Syrkin, Vibrations Localized Near Surface and Interfaces in Nontraditional Crystals, (review) Progress in Surface Science, 55, N1, 1997.
13. А.Т. Пугачов, Е.С.Сыркин, и др. Тепловое расширение пленок фуллерита C60 . ЖЭТФ, 1998, Т. 114, №11, с. 1868-1875.
14. М.В.Воинова, Е.С.Сыркин Метод определения вязкости жидкокристаллических пленок Ленгмюра-Блоджетт. Кристаллография, 1998, Т.43 №5, с.917-919.
15. E.S.Syrkin, A.V.Tutov Surface projected spectral densities in crystal with planar defects. Journal of Physics : Condenced Matter, 1998 , p.8619-8628.V.10
16. Yu.A. Kosevich, E.S. Syrkin, Dissipative Interaction and Anomalous Surface Absorption of Bulk Phonons at Two-Dimensional Defects in a Solid, Phys. Letters A, 251, 1999.
17. A.M. Kosevich, A. Mayer, S.B. Feodosyev, I.A. Gospodarev, V.I. Grishaev, E.S. Syrkin, Atom Dynamics of Micro-Clusters on Atomically Smooth Surfaces, Superlattices and Microstructures, 27, No1, 7, 2000.
18. А.С.Ковалев, Ж.А.Можен, Е.С.Сыркин Многомерные и поверхностные солитоны в нелинейной упругой среде. ФНТ, 2002, Т.29, № 5, с.515-529.
19. M.L.Polyakov, E.S.Syrkin Effect of surface distortion on vibrational characteristics in the semi-infinite quasi-low-dimensional systems. Physica E, (Low-Dimensional Structures) V.15 (2002) p.75-81.
20. E.T. Verkhovtseva, I.A. Gospodarev, V.I. Grishaev, S.I. Kovalenko, D.D. Solnyshkin, E.S. Syrkin, S.B. Feodosyev, Atom Dynamics and the Problem of the Structural Stability of Free Clusters of Solidified Inert Gases, Low Temperature Physics, 29, No 5, 386, 2003.
21. Feher, A.A. Mamaluĭ, A. Ya. Dul’fan, E.S. Syrkin and A.G. Shkorbatov, Low-temperature phonon transport in 3D point-contacts (review), Low Temp. Phys. 31, No 11, 921, 2005.
22. V.A.Lykah, E.S.Syrkin Oscillation of the charged double wall carbon nanotube. In book (carbon nanotubes: Fundamental aspects and applications NATO ASI. Springer 2006, V.1, N1, p.217-218.
23. V.A.Lykah, E.S.Syrkin Nonlinear rotational waves in a molecular chain. Journal of Physics : Condenced Matter, ISSN 0953-8984, 2008 V.20 N22, p.224022-1 – 224022-5.
24. E.S. Syrkin, S.B. Feodos’ev, K.V. Kravchenko, A.V. Eremenko, B.Ya. Kantor and Yu.A. Kosevich, Flexural rigidity of layers and its manifestation in the vibrational characteristics of strongly anisotropic layered crystals. Characteristic frequencies and stability conditions in quasi-two-dimensional systems, Low Temp. Phys. 35, No 2, 158, 2009.
25. I.A. Gospodarev, V.V. Eremenko, K.V. Kravchenko, V.A. Sirenko, E.S. Syrkin and S.B. Feodos’ev Vibrational characteristics of niobium diselenide and graphite nanofilms Low Temp. Phys. 36, No 4, 344 2010.
26. Alexander Feher, Eugen Syrkin, Sergey Feodosyev, Igor Gospodarev and Kirill Kravchenko Quasi-Particle Spectra on Substrate and Embedded Graphene Monolayers, in: “Physics and Application of Graphene – Theory” (ed. S. Mikhailov) “InTex” Open Access Publisher, ISBN 978-953-307-996-7 Croatia, 2010
27. A Feher, E. Syrkin, I. Gospodarev, E. Manzhelii, A. Kotlyar, K. Kravchenko, The Features of Low Frequency Atomic Vibrations and Propagation of Acoustic Waves in Heterogeneous Systems, in: “Waves in Fluids and Solids” (ed. R.P. Vila) “InTex” Open Access Publisher, ISBN 978-953-307-246-3 Croatia, 2011.
28. I.A. Gospodarev, O.V. Kotlyar, K.V Kravchenko, E.V. Manzhelii, E.S Syrkin, A.V.Yeremenko, I.K. Galetich, Low Temperature Peculiarities of Quasi-Particle Spectra of Disordered Solid Solutions, in: “Contemporary Problems of Mathematics, Mechanics and Computer Sciences” (eds. N.N. Kizilova, G.N. Zholtkevich) PRB Virovec’,ISBN 978-966-2579-92-5 Ukraine, 2011
29. А.А.Лисунов, В.А.Майданов, Э.Я.Рудавский, А.С.Рыбалко, Е.С.Сыркин Особенности температурной зависимости давления твердого гелия при низких температурах ФНТ 2012, т.36 №6, с.589-597.
30. A.Feher, I.Gospodarev, O.Kotlyar, K.Kravchenko, E.Manzhelii, E.Syrkin, S.Feodosyev Impurity levels in the electron spectra of graphene, Superlattices and Microstructures, 53, 55, 2013
31. I.A. Gospodarev, A.V. Eremenko, K.V. Kravchenko, A.F. Sirenko, V.A. Sirenko, E. S. Syrkin, S.B. Feodosyev, *, and Yu. A. Shabakaeva, Distinctive Features of Thermal Expansion of Niobium Diselenide, Physics of the Solid State, 55 No. 4, 825, 2013
32. Alexander Feher, Eugen Syrkin, Sergey Feodosyev, Igor Gospodarev, Elena Manzhelii, Alexander Kotlar and Kirill Kravchenko Electronic and Vibrational Properties of Adsorbed and Embedded Graphene and Bigraphene with Defects. In: New Progress on Graphene Research. Ed. Jian Ru Gong, InTech, Rijeka, Croatia, ISBN 978-953-51-1091-0, pp. 135-158 (2013)
33. V.V. Eremenko, V.A. Sirenko, I.A. Gospodarev, E.S. Syrkin, S.B. Feodosyev, I.S. Bondar, K.A. Minakova Anisotropic behavior and inhomogeneity of atomic local densities of states in graphene with vacancy groups Journal of Science: Advanced Materials and Devices 1 (2), 167-173, 2016
34. Feher Alexander, Feodosyev Sergey, Gospodarev Igor, Syrkin Eugen, and Grishaev Vladimir. Phonon Spectrum and Vibrational Thermodynamic Characteristics of Graphene Nanofilms. In: Graphene Science Handbook: Nanostructure and Atomic Arrangement. CRC Press, ISBN 9781466591370, 289-304, 2016
35. А.А. Мамалуй, Е.С. Сыркин, Т.Н. Шелест и др.; Вакансии в низкоразмерных кристаллических системах (монография) – НТУ ХПИ. Харьков, «ФОП Панов А.Н.» ISBN 978-617-7293-68-1, 268 стр. (2016)
36. Eremenko V., Sirenko V., Dolbin V., Feodosyev S., Gospodarev I., Syrkin E., Bondar I., Minakova K The Phonon Mediated Anomalies of Thermal Expansion in Transition-Metal Componds and Emergent Nanostructures. "Solid State Phenomena. 257 (1), 81-85, 2017
37. E.L. Fertman, E.S. Syrkin Multiferroic Vi_0.65 La_0.35 Fe_0.5 Sc_0.5=0.3 Perovskite Magnetic and Thrmodynamic Properties. Journal of Magnetism and Magnetic Materials, 2017 V.429, p.174-187.
38. Victor A. Lykah and Eugene S. Syrkin. In book:Polarons in the Functionalized Nanowires In: Polarons. Recent progress and perspectives. Ed. Amel Laref. Nova Science Publishers, Inc. ISSN: 978-1-53613-936-5_eBook. Chapter 6, pp. 223-26 (2018)
39. V.A. Lykah, E.S. Syrkin. Impuriton Phonon Quasiparticles Possibility and Rapid Dissolution of ³He inclusions in ⁴He Crystal. Theoretical Physics 2017, v.2 N4, p. 145-162.
40. V.V. Eremenko, V.A. Sirenko, I.A. Gospodarev, E.S. Syrkin, S.B. Feodosyev, I.S. Bondar, K.A Minakova, Feher A. Electron spectra of graphene with local and extended defects. Journal of Physics: Conference Series 969 (1), 012021, 2018
41. V.A. Lykah, E.S. Syrkin. Adsorption, functionalization and electrostatic multipolar interactions at CNT and graphene surfaces. International Journal of Biosensors & Bioelectronics. 4 (5), 222-223, 2018
42. Yuriy A. Kosevich, Olena Yu. Tkachenko, Eugenii S. Syrkin. Transmission of Thermal Phonons in Superfluid Helium Through Nonlinear Meta-Interface with a Solid. In: Nonlinear Systems, Vol. 2. Eds.: Archilla J.F.R., at al. ISBN: 978-3-319-72218-4, Springer International Publishing AG. Part ofSpringer Nature. pp.221-240 (2018)
43. Discrete atomic vibrations localized on defects in linear chains of atoms adsorbed by carbon nanobundles S.B. Feodosyev, I.A. Gospodarev, E.V. Manzhelii, V.A. Sirenko, and E.S. Syrkin, Low Temperature Physics/Fizika Nizkikh Temperatur, 2019, v. 45, No. 7, pp. 892–897
44. S.B. Feodosyev, I.A. Gospodarev, E.V. Manzhelii, V.A. Sirenko, and E.S. Syrkin, Влияние размерного квантования на электронные спектры графеновых нанолент Low Temperature Physics: 46, 187 (2020); Low Temperature Physics/Fizika Nizkikh Temperatur Том 46, N 2, c. 231-240 (231-240)
45. Низкоразмерные особенности колебательных характеристик и стабильностьграфеновыхнаноструктур (Обзор) И.А. Господарев, В.И. Гришаев, Е.В. Манжелий, В.А. Сиренко, Е.С. Сыркин, С.Б. Феодосьев Low Temperature Physics: 46, 232 (2020); Low Temperature Physics/Fizika Nizkikh Temperatur Том 46, N 3, c. 286-315
46. Syrkin E.S., Sirenko V.A., Feodosyev S.B., Gospodarev I.A., Minakova K.A.Handbook of Graphene Materials, Volume 7: Peculiarities of quasi-particle spectra in graphene nanostructures  (глава в монографії) "John Wiley & Sons, Inc."USA, New York (ed. AshutoshTiwari), 2018 ISBN 1119469651, 9781119469650, 70 p.
47. V.A.Lykah, E.S. Syrkin and E.N.Trotskii Heavy doped organic crystals ordering Low Temperature Physics/Fizika Nizkikh Temperatur, 2021, vol. 47, No. 5, pp. 440–445

List of publications contains 299 works, including 1 monograph.