Department of Physics, Tel: +44 (0) 1509 22 8409

Alexander Rakhmanov
 

Alexander L. Rakhmanov, born in 1948 in Novosibirsk, Russian Federation.

Graduated from Moscow Institute for Physics and Technology in 1973.

Obtained the Candidate of Sciences (Ph.D.) degree at Institute for High Temperatures USSR Academy of Sciences in 1977 and Doctor of Physics and Mathematics degree at the same institution in 1988. The doctor thesis dealt with the electromagnetic properties and instabilities in superconductors.

The author of 2 monographs and of more than 150 papers and reviews in refereed journals. The publications are mainly concerned with physics of superconductivity and magnetism.

A.L. Rakhmanov is Vice Chairman of the Program on Novel Superconducting and Magnetic Materials in Russian Academy of Sciences. He was a team leader of several grants on magnetic and superconducting materials supported by different Russian foundations and collaborative grants with EU, US, and Japan. He regularly presents invited talks at International Conferences.

The main fields of interests during last 5-7 years are the physics of magnetoresistive materials (including giant magnetoimpedance and colossal magnetoresistance), physics of type-II superconductors, and applied superconductivity.

Permanent position Head of the Condensed Matter Theory Laboratory at the Institute for Theoretical and Applied Electrodynamics Russian Academy of Sciences, Moscow, Russia

Visiting Scientist in the Institute of Physical and Chemical Research (RIKEN), Japan from 2004 up to date.

Membership in Scientific Councils

Scientific Council of the Institute for Theoretical and Applied Electrodynamics

Special Scientific council for graduation PhD and Doctor of Science degree at Institute for Theoretical and Applied Electrodynamics

Grants for the last 5 years

Grant RP2-2355-MO-02 of U.S. Civilian Research & Development Foundation

Grants 01-2282 and 01-2008 of INTAS, the International Association for the promotion of cooperation with scientists from the New Independent States

EU 6-th Framework program on research, technology, development, and demonstration; project CoMePhs

Collaborative Grant 06-02-91200 for the Russian Foundation for Basic Research and Japanese Society for Propagation of Science

Grants 02-02-16708, 03-02-16626, 05-02-17600, and 06-02-16691 of the Russian Foundation for Basic Research

Grant SSc-1694.2003.2 of President of Russian Federation for Leading Scientific Schools

Awarded by the Stipend of the President of Russian Federation for outstanding scientists in 1997-2003.

Research activity

I Applied superconductivity

1). The development of theory of thermo-magnetic instability in composite superconductors (1975-1982); 2) the method of calculation of the limiting currents in technical conventional (1982-1990) and high-Tc (2000-2007) superconductors; 3) the theory of superconductor-normal metal transition in superconducting materials and devices under rapidly changing magnetic fields and currents (1992-2002)

II Vortex matter in type-II superconductors

1) The magnetization, magnetic susceptibility and flux-line structures in type-II superconductors (1994-2004); 2) the theory of turbulent instability in vortex matter of type-II superconductors (2001-2004); 3) the theory of the dendrite instability in vortex matter of type-II superconductors (2004-2006); 4) the dynamics of the vortices, self-organized structures, and instabilities in superconductors with artificial arrays of pinning sites (2003-2007)

III Plasma waves in layered superconductors

1) The propagation of the plasma waves in the layered superconductors with modulated properties: transition and Cherenkov radiation, photonic crystals (2004-2007); 2) the non-linear effects in the plasma wave propagation in layered superconductors (2005-2007)

IV The electrodynamics of magnetic materials

1) The theory of non-linear effects in magnetic materials exhibiting the giant magnetic impedance phenomenon (1999-2003); 2) the theory of amplification of the weak signals in ferromagnetic structures near magnetization reversal threshold (2000-2005); 3) the linear and non-linear effects in ferromagnetic films and nanocomposites (2003-2007)

VI Phase separation and related effects in the strongly correlated electron systems

1) The theoretical description of magnetoresistance, 1/f noise, and magnetic susceptibility in nano-scale metal-insulator mixtures, including phase-separated materials with colossal magnetoresistance (2000-2006); 2) the prediction of the phase separation, metal-insulator transition in the two-band strongly correlated systems with and without magnetic ordering (2005-2007)

V Macroscopic quantum tunneling

1) The theory of the quantum tunneling enhancement in the stacks of Josephson junctions and small junctions (2006-2007); 2) the theory of the resonance peak splitting in the double-well potential due to the quantum tunneling (2006)

Publications

Books and main reviews

1. R.G. Mints, A.L. Rakhmanov. Instabilities in superconductors. Moscow: Nauka Publishers, 1984 (in Russian).

2. A.Vl. Gurevich, R.G. Mints, A.L. Rakhmanov. Physics of composite superconductors, Nauka Publishers, 1987 (in Russian). English translation: Begell House Inc., New York, 1997, 350 p.

3. R.G. Mints and A.L. Rakhmanov. Critical state stability in type II superconductors and superconducting-normal metal composites, Reviews of Modern Physics, 1981, v.53, 551.

Selected publications in refereed journals in 2001-2007

2001

1. L.M. Fisher, P.E. Goa, M. Baziljevich, T. H. Johansen, A.L. Rakhmanov, V. A. Yampol'skii "Hydrodynamic instability of the flux-antiflux Interface in type-II superconductors", Phys. Rev. Lett., 2001, 87, 247005.

2. A.L. Rakhmanov, K.I. Kugel, Ya.M. Blanter, M.Yu. Kagan, "Resistivity and 1/f noise in non-metallic phase separated manganites". Phys. Rev. B, 2001, 63, 174424.

3. W.V. Pogosov, K.I. Kugel, A.L. Rakhmanov,  E.H. Brandt. "Approximate Ginzburg-Landau solution for the regular flux-line lattice. Circular cell method", Phys. Rev. B, 2001, 64, 064517.

4. A.S Antonov, N.A Buznikov, I.T Iakubov, A.N Lagarkov, A.L Rakhmanov "Non-linear magnetization reversal of Co-based amorphous micro-wires induced by AC current", J. Phys. D: Appl. Phys., 2001, 34,.752.

5. M.Yu. Kagan, K.I. Kugel, D.I. Khomskii, and A.L. Rakhmanov "Phase separation, charge ordering and electron transport in manganites", Physica C, 2001, 364-365, 643.

6. W.V. Pogosov, A.L. Rakhmanov, E A. Shapoval "Vortex state in mesoscopic cylinders. Variational approach", Physica C, 2001, 356, 225.

7. V.S. Vysotsky, Yu.А. Il’in, K. Funaki, М. Таkeo, К. Shimohata, S. Nakamura, M. Yamada, K. Hasegawa, and A.L. Rakhmanov, “Quench development and ultimate normal zone propagation "velocity" in superconductors under fast current change”, IEEE Trans. on Appl. Supercond., 2001, 11, 2118.

8. V.S. Vysotsky, Yu.А. Il’in, A.L. Rakhmanov, and M. Takeo, “Quench development analysis in HTSC coils by use of the universal scaling theory”, IEEE Tran., on Appl. Supercond., 2001, 11, 1824.

2002

9. L.S. Uspenskaya, A.B. Kulakov, A.L. Rakhmanov "Phase transition in the vortex system in Bi2212:Pb single crystal", JETP Lett., 2002, 76, 214.

10. A.L. Rakhmanov, L.M. Fisher, A.A. Levchenko, V.A. Yampolsky, M. Baziljevich, T.H. Johansen "Instability of the magnetization reversal front in superconductors with non-linear anisotropic current-voltage characteristics", JETP Lett., 2002, 76, 349.

11. A.L. Rakhmanov, L.M. Fisher, V.A. Yampolsky, M. Baziljevich, T.H. Johansen "Instability of magnetization reversal front in anisotropic superconductors", JETP, 2002, 95, 768.

12. A.O. Sboychakov, A.L. Rakhmanov, K.I. Kugel, M.Yu. Kagan, I.V. Brodsky "Tunneling magnetoresistance in phase separated manganites", JETP, 2002, 95, 753.

13. V.S. Vysotsky, Yu.A. Ilyin, A.L. Rakhmanov "Stability and quench development in HTS magnets: influence of cooling and material parameters", Adv. Cryog. Eng. 2002, 47, 481-488.

14. A.S. Antonov, N.A. Buznikov, A.B. Granovsky, A.V. Joura, A.L. Rakhmanov, A.M. Yakunin, "Domain-walls motion in glass-coated CoFeSiB amorphous microwires", J. Magn. Magn. Mater., 2002, 249, 95.

15. A.S. Antonov, N.A. Buznikov, A.B. Granovsky, I.T. Iakubov, A.F. Prokoshin, A.L. Rakhmanov, A.M. Yakunin "Magnetization reversal process and nonlinear magneto-impedance in Cu/NiFe and Nb/NiFe composite wires", J. Magn. Magn. Mater., 2002, 249, 315.

16. N.A. Buznikov, A.L. Rakhmanov, K.N. Rozanov "Dynamic permeability of ferromagnetic thin films with stripe domain structure", IEEE Trans. Magn., 2002, 38, 3123.

17. W.V. Pogosov, R.I. Kugel, and A.L. Rakhmanov, “Variational calculations of vortex structures in bulk and mesoscopic superconductors”. In: Studies of high temperature superconductors (Advances in Research and Applications); vol. 42: Vortex Physics, Edited by A. Narlikar, Nova Sciences Publishing Inc. NY, Chapter-4, p. 77-108 (2002).

2003

18. W.V. Pogosov, A.L. Rakhmanov, V.V. Moschalkov Vortex lattice in the presence of a tunable periodic pinning potential, Phys. Rev. B, 2003, 67, 014532.

19. L.S. Uspenskaya, A.B. Kulakov, A.L. Rakhmanov "Strong three-dimensional correlations in the vortex system for Bi0.7Pb0.3O2.2Sr2CaCu2O8" Phys. Rev. B, 2003, 68, 014532.

20. N.A. Babushkina, E.A. Chistotina, K.I. Kugel, A.L. Rakhmanov, O.Yu. Gorbenko, A.R. Kaul "Magnetoresistance and magnetic susceptibility of phase-separated La-Pr-Ca manganites", J .Phys.: Condens. Matter, 2003, 15, 259.

21. A.O. Sboychakov, A.L. Rakhmanov, K.I. Kugel, M.Yu. Kagan, I.V. Brodsky "Tunneling magnetoresistance and 1/f noise in phase-separated La-Pr-Ca manganites", J .Phys.: Condens. Matter, 2003, 15, 1705.

22. M.Yu. Kagan, A.V. Klaptsov, I.V. Brodsky, K.I. Kugel, A.O. Sboychakov, A.L. Rakhmanov "Nanoscale phase separation in manganites", J. Phys. A: Math. and General, 2003, 36,. 9155.

23. A.O. Sboychakov, A.L. Rakhmanov, K.I. Kugel, M.Yu. Kagan, I.V. Brodsky "Tunneling magnetoresistance of phase-separated manganites", J. Magn. Magn. Matter., 2003, 258-259, 296.

24. A.S. Antonov, N.A. Buznikov, V.P. Goncharov, M.M. Filatov, A.A. Rakhmanov, A.L. Rakhmanov, "Effects of longitudinal AC magnetic field on frequency spectrum of voltage response of soft magnetic conductors", J. Magn. Magn. Mater., 2003, 258-259, 198.

25. A.S. Antonov, N.A. Buznikov, A.L. Rakhmanov "Magnetization reversal process and nonlinear magnetoimpedance in multilayered films", J. Magn. Magn. Mater., 2003, 258-259, 192.

26. A.S. Antonov, N.A. Buznikov, A.B. Granovsky, N.S. Perov, A.F. Prokoshin, A.A. Rakhmanov, A.L. Rakhmanov "Nonlinear magnetoimpedance effect in soft magnetic amorphous wires extracted from melt", Sensor and Actuators A, 2003, 106, 213.

27. A.L.Rakhmanov, V.S.Vysotsky and N.V.Zmitrenko "Quench development in long HTS objects – the possibility of "blow-up" regimes and a heat localization", IEEE Trans on Appl. Supercond., 2003, 1942.

2004

28. L.M. Fisher, A. Bobyl, T. H. Johansen, A.L. Rakhmanov, V. A. Yampol'skii, A.V. Bondarenko, M.A. Obolensky "Anisotropic origin of bending instability of the flux-antiflux interface in type-II superconductors", Phys. Rev. .Lett., 2004, 92, 037002.

29. I. González, J. Castro, D. Baldomir, A.O. Sboychakov, A.L. Rakhmanov, K.I. Kugel "Magnetic polarons in a doped one-dimensional antiferromagnetic chain", Phys. Rev. B, 2004, 69, 224410.

30. A.L. Rakhmanov, V.S. Vysotsky, V.E. Sytnikov "Correlation between voltage–current characteristics of superconducting filaments, single wires and multistrand cables", Physica C, 2004, 401, 107.

31. L.S. Uspenskaya, A.B. Kulakov, and A.L. Rakhmanov "Anisotropic flux creep in Bi2212:Pb single crystal in crossed magnetic fields", Physica C, 2004, 402, 136.

32. V.S. Vysotsky, A.L. Rakhmanov, and Yu. Ilyin, “Influences of voltage-current characteristic difference on quench development in low-Tc and high-Tc superconducting devices”, Physica C, 2004, v. 401, 57.

33. K.I. Kugel, A.L. Rakhmanov, A.O. Sboychakov, M.Yu. Kagan, I.V. Brodsky, A.V. Klaptsov "Characteristis of the phase-separated states in manganites and their relation to the transport and magnetic properties", JETP, 2004, 98, 572-581.

34. K.I. Kugel, A.L. Rakhmanov, A.O. Sboychakov, M.Yu. Kagan, I.V. Brodsky, A.V. Klaptsov "Spin-dependent transport in phase-separated manganites". In: Physics of Spin in Solids: Materials, Methods and Applications, ed. S. Halilov, NATO Science Series, vol. 156, Kluwer, Dordrecht, 2004, pp. 177-194.

2005

35. Sergey Savel’ev, A.L. Rakhmanov, and Franco Nori, “Using Josephson vortex lattices to control terahertz radiation: tunable transparency and terahertz photonic crystals”, Phys. Rev. Lett., 2005, 94, 157004.

36. K.I. Kugel, A.L. Rakhmanov, and A.O. Sboychakov, “Phase separation in the Jahn-Teller systems with localized and itinerant electrons”, Phys. Rev. Lett., 2005, 95, 267210.

37. A.O. Sboychakov, A.L. Rakhmanov, K.I. Kugel, I. González, J. Castro, and D. Baldomir, Evolution with temperature of the magnetic polaron state in an antiferromagnetic chain with impurities, Phys. Rev. B, 2005, 72, 014438.

38. Sergey Savel’ev, Valery Yampolskii, A.L. Rakhmanov, and Franco Nori, Generation of tunable terahertz out-of-plane radiation using Josephson vortices in modulated layered superconductors, Phys. Rev. B, 2005, 72, 144515.

39. Sergey Savel'ev, A.L. Rakhmanov, and Franco Nori, Nonlinear amplifier and frequency shifter using a tunable periodic drive, Phys. Rev. E, 2005, 72, 056136.

40. Sergey Savel’ev, A.L. Rakhmanov, F. Nori, “Experimentally realizable devices for domain wall motion control”, New J. Phys., 2005, 7, Art. No 82.

41. N.A. Buznikov, I.T. Iakubov, A.L. Rakhmanov, A.O. Sboychakov, “High frequency magnetic permeability of nanocomposite film”, J. Magn. and Magn. Materials, 2005, 293, 938.

42. A.O. Sboychakov, A.L. Rakhmanov, K.I. Kugel, I. González, J. Castro, D. Baldomir, “Temperature behavior of bound magnetic polarons in antiferromagnetic chain”, J. Magn. and Magn. Materials, 2005, 293, 946.

2006

43. Sergey Savel'ev, A.L. Rakhmanov, V. A. Yampol'skii, and Franco Nori, “Analogues of nonlinear optics using terahertz Josephson plasma waves in layered superconductors”, Nature Physics, 2006, No 2, 521.

44. Vyacheslav R. Misko, Sergey Savel'ev, A.L. Rakhmanov, and Franco Nori, “Non-uniform self-organized dynamical states in superconductors with periodic pinning”, Phys. Rev. Lett., 2006, 96, 127004.

45. D.V. Denisov, A.L. Rakhmanov, D.V. Shantsev, Y.M. Galperin, and T.H. Johansen, “Dendritic and uniform flux jumps in superconducting films”, Phys. Rev. B, 2006, 73, 014512.

46. Sergey Savel'ev, A.L. Rakhmanov, and Franco Nori, “Domain-wall step motors: Controlling the motion of magnetic domain walls using patterned magnetic films”, Phys. Rev. B, 2006, 74, 024404.

47. A.O. Sboychakov, A.L. Rakhmanov, K.I.Kugel, “Jahn-Teller distortions and phase separation in doped manganites”, Phys. Rev. B, 2006, 74. 184512.

48. S.L. Ogarkov, M.Yu. Kagan, A.O. Sboychakov, A.L. Rakhmanov, and K.I. Kugel, “A new type of bound magnetic polaron state: the formation of long-range spin distortions”, Phys. Rev. B, 2006, 74, 014436.

49. Sergey Savel'ev, A.L. Rakhmanov, and Franco Nori, “Terahertz radiation coherently scattering on Josephson vortex lattices: Giant magneto-optical effect and Doppler effects using terahertz tunable photonic crystals”, Phys. Rev. B, 2006, 74, 184512.

50. M.Yu. Kagan, K.I. Kugel, A.L. Rakhmanov, K.S. Pazhitnykh, “Small-scale phase separation in doped anisotropic antiferromagnets”, Journal of PhysicsC: Condensed Matter, 2006, 18, 10905.

51. Sergey Savel'ev, A.L. Rakhmanov, V. A. Yampol'skii, and Franco Nori, “Using Josephson vortex lattices to generate, detect and control THz radiation”, Physica C, 2006, 437, 281.

52. S. Savel'ev, V. Yampol'skii, A.L. Rakhmanov, F. Nori, “Generation of tunable terahertz radiation using Josephson vortices: Transition and Cherenkov radiation”, Physica C, 2006, 445-448, 175.

53. S. Savel'ev, A.L. Rakhmanov, F. Nori, “Tunable photonic crystal for THz radiation in layered superconductors: Strong magnetic-field dependence of the transmission coefficient”, Physica C, 2006, 445-448, 180.

54. V.S. Vysotsky, V.E. Sytnikov, A.L. Rakhmanov, Y. Ilyin, “Analysis of stability and quench in HTS devices - New approaches”, Fusion Engineering and Design, 2006, 81, 2417.

2007

55. S. Savel’ev, A.L. Rakhmanov, and F. Nori, “Quantum THz electrodynamics and macroscopic quantum tunnelling in layered superconductors”, Phys. Rev. Lett., 2007, 98, 077002.

56. Vyacheslav R. Misko, Sergey Savel'ev, A.L. Rakhmanov, and F. Nori, “Negative differential resistivity in superconductors with periodic arrays of pinning sites”, Phys. Rev. B, 2007, 75, 024509.

57. Sergey Savel’ev, A.L. Rakhmanov, Xuedong Hu, A. Kasumov, and Franco Nori, “Quantum electromechanics: Quantum tunneling near resonance and qubits from buckling nanoscale bars”, Phys. Rev. B, 2007, 75, 165417.

58. Sergey Savel’ev, V. A. Yampol’skii, A. L. Rakhmanov, and Franco Nori, “Layered superconductors as nonlinear waveguides for terahertz waves”, Phys. Rev. B, 2007, 75, 184503.

59. K.I. Kugel_, A.L. Rakhmanov, A.O. Sboychakov, “Electronic phase separation in magnetic oxides with Jahn–Teller ions”, J. Magn. and Magn. Materials, 2007, 310, 1024.
 
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