Principal research group of Academician V. V. Eremenko Studies of structures and magnetoelastic properties of low-dimensional systems in the region of low temperature phase transitions

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Staff of Research Group

Sirenko V.A. CV file pdf 13 kB e-mail:sirenko@ilt.kharkov.ua	Director of Research Doctors of Sciences,  Professor.
Shabakaeva Yu.A. CV file pdf 24.4 kB	Candidates of Sciences (Ph.D.),  Junior Research Fellow.
Shvedun M. Yu. CV file pdf 157.2 kB	Candidates of Sciences (Ph.D.)  Research Fellow
Ibulaev V. V. CV file pdf 210 kB	Ph.D. student

Main directions of studies

• Structural investigations of magnetics and superconductors at low temperatures.
• Magnetostriction phenomena in magnetics and superconductors in the region of low temperature phase transitions.

Main principal results, recently obtained

Identification and investigation of quantum magnetization and magnetostriction oscillations in the mixed state of superconductors.

Revealing of the twining structure appearance under formation of the antiferromagnetic dielectric phase in  Nd_0.5Sr_0.5MnO₃ manganite.

Detection and explanation of the negative thermal expansion in EuBaCuO compounds along the C crystal axis, substantially below the Debye temperature.

Experimental equipment 

X-rays diffractometer DN-2, equipped with a low temperature chamber compatible with originally designed cryostats, and intended for measurements in stationary magnetic fields up to 5 T at 10 – 300 K.

Main publications of last years

Monograph:
V. V. Eremenko and V. A. Sirenko, Magnetic and magnetoelastic properties of antiferromagnets and superconductors, - book, ed. Naukova Dumka, Kiev, 2004, 325 p. (in Russian). 

Reviews:
Eremenko V., Sirenko V. Magnetic and Magnetoelastic properties of antiferromagnets and superconductors "Cambridge Scientific Publishers" England, Cambridge. 2007. 324 pp.

V. V. Eremenko, V. A. Sirenko, Inhomoganeous magnetic states in antiferromagnets. In “Smart materials for ranging systems”, ed. by J.Franse, V .Eremenko, V. Sirenko. Springer-Kluwer, NATO series in Physics 2006, p. 29 – 37. 

V. V. Eremenko, V. A.Sirenko, Yu. A. Shabakayeva. Quantum oscillations and peak effect of magnetostriction in superconductor // Magnetoelastic interaction phenomena in crystals. – Netherlands: Kluwer Academic Publishers. - 2004. – P. 313-334.

V. V. Eremenko, V. A. Sirenko, N. Shimchak, A. Nabyalek, Magnetostriction in superconductors, Low Temp. Phys., 25, N 4, 930 (1999).

V. A. Sirenko. Magnetostrictive effects in superconductors. Superlattices and microstructures, 24, pp. 221-226 (1998).

Papers:

J. Bartolome, E. Bartolome, V.V. Eremenko, V.V. Ibulaev, V.A. Sirenko, Yu.T. Petrusenko. On magnetic susceptibility of niobium diselenide. Low Temp. Phys. 34, N8, 813-816 (2008)

V. Eremenko, V. Sirenko, V. Ibulaev, M. Shvedun. Type of phase transition alongside a CDW-state formation in 2H-NbSe2. Proceedings of the International Conference on Magnetic Materials (ICMM-2007), V. 864, 273-275 (2007).

V. Eremenko, I. Gospodarev, V. Ibulaev, V. Sirenko, S. Feodos'ev, M. Shvedun,
Anisotropy of EuBaCuO letter parameter variation with temperature in quasi-harmonic limit. Low Temp. Phys.  32 N12, 1560-1565 (2006).

V.V. Eremenko, V.A. Sirenko 
Intrinsic inhomogeneities in antiferromagnets and superconductors. Ukrainskii Fizicheskii Zhurnal, 50 , N8, 855-865 (2006)

V.V. Eremenko, S.B. Feodosyev, I.A. Gospodarev, V.A. Sirenko, M.Yu. Shvedun, W. McCallum, M. Tovar. Negative thermal expansion of HTSC-type structures: low temperature structure measurementson Eu_1+x(Ba_1-yR_y)_2-xCu₃O₇-d compounds and theoretical treatment. Low Temp. Phys., 31, N 3-4, 350-355 (2006).

O. S. Mantytskaya, I. O. Troyanchuk, I. M. Kolesova, H. Szymczak, V. A. Sirenko, and V. V. Eremenko, Oxygen non-stoichiometry effect on the crystal structure and magnetic properties of cation-deficient Pr_0.9MnO_x (2.85 < x < 2.90) manganites, Low Temp. Phys. 32, N12, 872-878 (2006).

V. V. Eremenko, S. B. Feodosyev, I. A. Gospodarev, V. A. Sirenko, M. Yu. Shvedun, M. Tovar and W. McCallum, Structural study of magnetostrictive superconducting compounds. in “Smart materials for ranging systems”, ed. by J.Franse, V.Eremenko, V. Sirenko. Springer-Kluwer, NATO series in Physics 2006, p. 259 – 270.

V. Eremenko, P. Gammel, G. Remenyu, V. Sirenko, A. Panfilov, V. Desnenko, V. Ibulaev and A. Fedorchenko, Magnetostriction Of Charge Density Wave Superconductor. // in the Proceedings of 24-th International Conference on Low  Temperature Physics (LT24 (Orlando, USA, 2005) (Volume 850 of the AIP Conf. Proc. Ser.)

V. Eremenko, S. Feodosyev, I. Gospodarev, V. Ibulaev, R. McCallum, M. Shvedun, V. Sirenko, Negative Expansion of  Eu(Ba_1-xLax)₂Cu₃O_7-d compounds. // in the Proceedings of 24-th International Conference on Low  Temperature Physics (LT24 (Orlando, USA, 2005) (Volume 850 of the AIP Conf. Proc. Ser.)

I. O. Troyanchuk, V. A. Khomchenko, V. V. Eremenko, V. A. Sirenko, H. Szymczak. Antiferromagnet - ferromagnet phase transition in lightly doped manganites. Low Temperature Physics  31, N8/9, 1073-1080 (2005).

V. V. Eremenko and V. A. Sirenko, Intrinsic inhomogeneities in antiferromagnets and superconductors. Ukrainskii Fizicheskii Zhurnal, 50, N 8, 855-865 (2005) (dedicated to the 75-th Birthday of V.G. Bar’yakhtar). 

I. O. Troyanchuk, V. A. Khomchenko, G. M. Chobot, A. I. Kurbakov, A. N. Vasil’ev, V. V. Eremenko, V. A. Sirenko, M. Yu. Shvedun, H. Szymczak, R. Szymczak. Spin-reorientational transitions in low-doped Nd_1-xCa_xMnO₃ manganites: the evidence of an inhomogeneous magnetic state. J. Phys.: Condens. Matter 15, 8865–8880 (2003).

V. A. Sirenko, N. I. Makedonska, Yu. Shabakayeva, R. Schleser. On the transverse magnetization of the anisotropic superconductor 2H-NbSe₂. Low Temp. Phys, 28, N 7, с.796-802 (2002), (dedicated to the 70-th Birthday of Prof. V. V. Eremenko).

V. V. Eremenko, V. A. Sirenko, Yu. A. Shabakayeva, R. Schleser, and P. L. Gammel. Irreversible magnetostriction and magnetization of superconducting 2H-NbSe₂ single crystals in a peak-effect regime. Low Temp. Phys., 28, N 1, pp. 6-10 (2002).

V. V. Eremenko, V. A. Sirenko, R. Schleser, P. L. Gammel, Magnetostriction in the mixed state of the superconducting 2H-NbSe₂ single crystals, Fiz. Nizk. Temp., 27, 412 (2001) (Low Temperature Physics, 27, 305 (2001)) 

V. V. Eremenko, N. I. Makedonskaya, P. G. Makedonskaya, V. A. Sirenko, Computer-aided  design of nitrogen-free helium cryostats, Cryogenics, 41, N8, pp. 549-555 (2001).

V. V. Eremenko, V. A. Sirenko, Yu. A. Shabakayeva, R. Schleser, and P. L. Gammel. Magnetization and magnetostriction oscillations in superconducting 2H-NbSe₂ single crystal. Low Temp. Phys., 27, N 9/10, pp. 700-703 (2001).

V. V. Eremenko, S .L. Gnatchenko, N. Makedonska, Yu. Shabakayeva, M. Shvedun, V. Sirenko, J. Fink-Finowicki, K.V. Kamenev, G. Balakrishnan and D. Mck Paul. X-ray study of Nd_0.5Sr_0.5MnO₃ manganite structure above and below ferromagnetic-antiferromagnetic insulator spontaneous phase transition. Low Temp. Phys., 27, N 11, pp. 1258-1263 (2001).
 

International cooperation

• Institute of Physics, PAN (Polish Academy of Sciences)
• Advanced Nanotechnology Co. New-York, USA
• Iowa State University, USA
• Lucent Technology, New-Jersey, USA
• Argonne National Laboratory, Argonne, USA
• Grenoble High Magnetic Field La. France
• Laboratory des Tres Bass Temperature, Grenoble, France
• Cavendish Lab., Cambridge U., Great Britain
• Saha Institute Of Nuclear Physics, Calcutta, India
• Institute Of solid state and semiconductor Physics, Minsk, Belarus