Laboratory of Disordered Condensed Matter

List of main recent publications

1. E. L. Gromnitskaya, O. F. Yagafarov, O. V. Stalgorova, V. V. Brazhkin, and A. G. Lyapin, Pressure-Driven “Molecular Metal” to “Atomic Metal” Transition in Crystalline Ga, Phys. Rev. Lett. 98, 165503 (2007).

2. Vadim V. Brazhkin, Vladimir L. Solozhenko, Vasilii I. Bugakov, Sergei N. Dub, Oleksandr O. Kurakevych, Mikhail  V. Kondrin1 and Alexander G. Lyapin, Bulk Nanostructured Carbon Phases Prepared from C60: Approaching the “Ideal” Hardness, J. Phys.: Condens. Matter 19, No. 23, 236209 (2007).

3. V. V. Brazhkin, A. G. Lyapin, S. V. Popova, Y. Katayama, H. Saitoh, and W. Utsumi , Molecular-network–ionic structure transitions in liquid AlCl₃ and ZnCl₂ halogenides under pressure, J. Phys.: Condens. Matter 19, No. 24, 246104 (2007).

4. V. V. Brazhkin, A. G. Gavrilyuk, A. G. Lyapin, and Yu. A. Timofeev, Y. Katayama, and S. Kohara, AsS: Bulk inorganic molecular-based chalcogenide glass, Appl. Phys. Lett. 91, 031912 (2007).

5. A. A. Pronin, V. V. Glushkov, M. V. Kondrin, A. G. Lyapin, V. V. Brazhkin, N. A. Samarin, and S. V. Demishev, Hopping conduction and magnetoresistance of C_2N-based nanomaterials synthesized under high pressure, Physics of the Solid State 49, No. 7, 1403–1409 (2007).

6. V. V. Brazhkin, E. A. Ekimov, A. G. Lyapin, S. V. Popova, A. V. Rakhmanina, S. M. Stishov, V. M. Lebedev, Y. Katayama, and K. Kato, Lattice parameters and thermal expansion of superconducting boron-doped diamonds, Phys. Rev. B 74, 140502(R) (2006).

7. V. V. Mukhamadiarov, D. A. Vanin, A. G. Lyapin, V. V. Brazhkin, M. V. Kondrin, S. G. Lyapin, S. V. Popova, Anisotropic Carbon Phases Prepared from Fullerite C₇₀ under High Pressure, Fullerenes, Nanotubes, and Carbon Nanostructures 14, No. 2-3, 409-414 (2006).

8. M. V. Kondrin, A. G. Lyapin, R. A. Sadykov, V. V. Brazhkin, S. V. Popova, Dilatometry and X-Ray Study of Orientational Phase Transitions in C₆₀, Fullerenes, Nanotubes, and Carbon Nanostructures 14, No. 2-3, 415-419 (2006).

9. S. V. Popova, O. A. Sazanova, V. V. Brazhkin, N. V. Kalyaeva, M. B. Kondrin, and A. G. Lyapin, High-pressure phases in the GaSb-Mn system, Physics of the Solid State 48, No. 11, 2177-2182 (2006).

10. M. V. Kondrin, S. V. Popova, V. P. Gizatullin, O. A. Sazanova, N. V. Kalyaeva, A. G. Lyapin, V. V. Brazhkin, S. A. Gudoshnikov, and Yu. V. Prokhorova, JETP Letters 84, No. 4, 195-198 (2006).

11. V. V. Brazhkin, Y. Katayama, A. G. Lyapin, S. V. Popova, Y. Inamura, H. Saitoh, and W. Utsumi, JETP Letters 82, No. 11, 713–718 (2005).

12. E.V. Tat’yanin, A.G. Lyapin, V.V. Mukhamadiarov, V.V. Brazhkin, and A.L. Vasiliev, Mechanism of formation of the superhard disordered graphite-like phase from fullerite C₆₀ under pressure, J. Phys.: Condens. Matter 17, No. 2, 249-256 (2005).

13. V.V. Brazhkin and A.G. Lyapin, Metastable High-Pressure Phases of Low-Z Compounds: Creation of a New Chemistry or a Prompt for Old Principles? , Nature Materials 3, 497-500 (2004).

14. V.V. Brazhkin and A.G. Lyapin, Hard Carbon Phases Prepared from fullerite C₆₀ under High Pressure, New Diamond and Frontier Carbon Technology 14, No. 5, 259-278 (2004).

15. E. L. Gromnitskaya, O. V. Stal’gorova, O. F. Yagafarov, V. V. Brazhkin,A. G. Lyapin, and S. V. Popova, Ultrasonic Study of the Phase Diagram of Methanol, JETP Letters 80, No. 9, 597-601 (2004).

16. A.G. Lyapin, V.V. Mukhamadiarov, V.V. Brazhkin, M.V. Kondrin, S.V. Popova, Ye.V. Tatyanin, S.C. Bayliss, and A.V. Sapelkin, Anisotropic nanoclustered carbon phases prepared from fullerite C₆₀ under non-hydrostatic high pressure, Fullerenes, Nanotubes and Carbon Nanostructures 12, No. 1&2, 235 - 241 (2004).

17. M.V. Kondrin, A.G.Lyapin, S.V.Popova, V.V.Brazhkin, Kinetics properties of orientational phase transition in polymerised states of fullerite C₆₀, Fullerenes, Nanotubes and Carbon Nanostructures 12, No. 1&2, 259 - 262 (2004).

18. A. V. Markin, N. N. Smirnova, B. V. Lebedev, A. G. Lyapin, V. V. Brazhkin, Thermodynamics of 2D polymerized tetragonal phase of fullerene C60 in the range from T →0 to 650K at standard pressure, Thermochimica Acta 411, No. 1, 101-108 (2004).

19. A. V. Markin, N. N. Smirnova, B. V. Lebedev, A. G. Lyapin, M. V. Kondrin, and V. V. Brazhkin, Thermodynamic and Dilatometric Properties of the Dimerized Phase of a C60 Fullerene, Physics of the Solid State 45, No. 4, 802–808 (2003).

20. V.V. Brazhkin, A.G. Lyapin, R.N. Voloshin, S.V. Popova, E.V. Tat’yanin, and N. F. Borovikov, S.C. Bayliss and A.V. Sapelkin, Pressure-Induced Crossover between Diffusive and Displacive Mechanisms of Phase Transitions in Single-Crystalline α-GeO₂, Phys. Rev. Lett 90, No. 14, 145503 (2003).

21. A.A. Stolbov, A.G. Lyapin, S.V. Popova, V.V. Brazhkin, E.L. Gromnitskaya, and O.V. Stal'gorova, Elastic properties of metastable crystalline and amorphous GaSb-Ge semiconductors synthesized under high pressure, High Press. Res. 23, No. 1-2, 187-190 (2003).

22. V.V. Brazhkin and A.G. Lyapin, High-pressure phase transformations in liquids and amorphous solids, J. Phys.: Condens. Matter 15, No 36, 6059-6084 (2003).

23. V. V. Brazhkin, Y. Katayama, Y. Inamura, M. V. Kondrin, A. G. Lyapin, S. V. Popova, R. N. Voloshin, Structural transformations in liquid, crystalline and glassy B₂O₃ under high pressure, JETP Letters 78, N 6, 393-397 (2003).

24. E. L. Gromnitskaya, O. V. Stal’gorova, A. G. Lyapin, V. V. Brazhkin, O. B. Tarutin, Elastic properties of D2O ices in solid-state amorphization and transformations between amorphous phases, JETP Letters 78, No. 8, 488-492 (2003).

25. A. G. Lyapin, V. V. Mukhamadiarov, V. V. Brazhkin, S. V. Popova, M. V. Kondrin, R. A. Sadykov, E. V. Tat'yanin, S. C. Bayliss, and A. V. Sapelkin, Structural and elastic anisotropy of carbon phases prepared from fullerite C₆₀, Appl. Phys. Lett. 83, No 19, 3903-3905 (2003).

26. V.V. Brazhkin and A.G. Lyapin, Two Scenarios for Phase-Transformation in Disordered Media, JETP Letters 78, N 9, 542-547 (2003).

27. V.V. Brazhkin, R.N. Voloshin, A.G. Lyapin, S.V. Popova, Phase equilibria in partially open systems under pressure: the decomposition of stoichiometric GeO₂ oxide, Physics-Uspekhi, 46, No. 12, 1283-1289 (2003).

28. V. V. Brazhkin, A. G. Lyapin and R. J. Hemley, Harder than Diamond: Dreams and Reality, Phyl. Mag. A. 82, No. 2, 231-253 (2002).

29. A. G. Lyapin, Mechanical Properties of Polymerized, Amorphous, and Nanocrystalline Carbon Phases Prepared from Fullerite C₆₀ under Pressure, in Perspectives of Fullerene Nanotechnology, edited by E. Osawa (Kluwer, Dordrecht, 2002) 199-216.

30. A. G. Lyapin, O. V. Stal'gorova, E. L. Gromnitskaya, and V. V. Brazhkin, Crossover between the Thermodynamic and Nonequilibrium Scenarios of Structural Transformations of H₂O Ih Ice during Compression, JETP 94, No. 2, 283-292 (2002).

31. A. G. Lyapin and V. V. Brazhkin, Correlations between the Physical Properties of the Carbon Phases Obtained at a High Pressure from C60 Fullerite, Physics of the Solid State 44, No. 3, 405-409 (2002).

32. M. V. Kondrin, A. G. Lyapin, S. V. Popova, and V. V. Brazhkin, The Influence of Dimerization on the Orientational Phase Transition in the C₆₀ Fullerite, Physics of the Solid State 44, No. 3, 447-449 (2002).

33. S. V. Demishev, A. A. Pronin, N. E. Sluchanko, N. A. Samarin, V. V Glushkov, A. G. Lyapin, M. V. Kondrin, V. V. Brazhkin, T. D. Varfolomeeva, S. V. Popova, and H. Ohta, New Nanocluster Carbyne-based Material Synthesized under High Pressure, Physics of the Solid State 44, No. 4, 607-611 (2002).

34. F. S. El’kin, V. V. Brazhkin, L. G. Khvostantsev, O. B. Tsiok, and A. G. Lyapin, In situ Study of the Mechanism of Formation of Pressure-Densified SiO₂ Glasses, JETP Letters 75, No. 7, 342–347 (2002).

35. V. V. Brazhkin, A. G. Lyapin, S. V. Popova, and R. N. Voloshin, New Types of Phase Transitions: Phenomenology, Concepts, and Terminology, in New Kinds of Phase Transitions: Transformations in Disordered Substances, edited by V. V. Brazhkin. S. V. Buldyrev, V. N. Ryzhov, and H. E. Stanley  (Kluwer, Dordrecht, 2002) p. 15.

36. V. V. Brazhkin, R. N. Voloshin, S. V. Popova, and A. G. Lyapin, Transitions in liquids: examples and open questions, in New Kinds of Phase Transitions: Transformations in Disordered Substances, edited by V. V. Brazhkin. S. V. Buldyrev, V. N. Ryzhov, and H. E. Stanley (Kluwer, Dordrecht, 2002) p. 239.

37. A. G. Lyapin, , V. V. Brazhkin, E.L. Gromnitskaya, V.V. Mukhamadiarov, O.V. Stal'gorova,  O.B. Tsiok,  Kinetics and Non-ergodic Nature of Amorphous-Amorphous Transformations under Pressure, in New Kinds of Phase Transitions: Transformations in Disordered Substances, edited by V. V. Brazhkin. S. V. Buldyrev, V. N. Ryzhov, and H. E. Stanley (Kluwer, Dordrecht, 2002) p. 449.

38. S.V.Demishev, A.A.Pronin, V.V.Glushkov, N.E.Sluchanko, N.A.Samarin, M.V.Kondrin, A.G.Lyapin, V.V.Brazhkin, T.D.Varfolomeeva, S.V.Popova, Hopping conduction of carbynes modified under high pressures and temperatures: galvanomagnetic and thermoelectric properties, JETP 95, 123 (2002).

39. V. V. Brazhkin and A. G. Lyapin, The inversion of relative shear rigidity in different material classes at megabar pressures, J. Phys.: Condens. Matter 14, 10861–10867, (2002).

40. V.V. Brazhkin, A.G. Glazov, V.V. Mukhamadiarov, E.L. Gromnitskaya, A.G. Lyapin, S.V. Popova, and O.V. Stal'gorova, Elastic Properties of Carbon Phases Obtained from C₆₀ under Pressure: The First Example of Anisotropic Disordered Carbon Solid, J. Phys.: Condens. Matter 14, 10911–10915, (2002).

41. V. V. Brazhkin, A. G. Lyapin, S. V. Popova, S. C. Bayliss, T. D. Varfolomeeva, R. N. Voloshin, A. G. Gavrilyuk, M. V. Kondrin, V. V. Mukhamad’yarov, I. A. Troyan, S. V. Demishev, A. A. Pronin, and N. E. Sluchanko, Interplay between the Structure and Properties of New Metastable Carbon Phases Obtained under High Pressures from Fullerite C60 and Carbyne, JETP Letters 76, No. 11, 681–692 (2002).

42. V. V. Brazhkin and A. G. Lyapin, Elastic Properties of Substances in the Megabar Pressure Range : Inversion of Shear Rigidity, JETP Letters 73, No. 4, 197-201 (2001).

43. V. V. Brazhkin, A. G. Lyapin, S. V. Popova, and R. N. Voloshin, Trends in the Search for Superhard Carbon Materials, in Advanced Materials 2001, Ultra-High Pressure Research: Novel Process for New Materials, Proc. 8th NIRIM Intern. Symp. Adv. Materials, edited by M Akaishi, T. Sekine, K. Takemura, T. Taniguchi, T. Kobayashi, K. Tajima, and N. Aida (Tsukuba, NIRIM, 2001) pp. 37-38.

44. A. G. Glazov, V. V. Mukhamad’yarov, V. V. Brazhkin, A. G. Lyapin, E. L. Gromnitskaya, O. V. Stal’gorova, and S. V. Popova, Anisotropy of the Elastic Properties and the Microhardness of Disordered Superhard Carbon Obtained from C₆₀ Fullerite under High Pressures, JETP Letters 73, No. 10, 552–556 (2001).

45. E. L. Gromnitskaya, O. V. Stal’gorova, V. V. Brazhkin, and A. G. Lyapin, Ultrasonic study of the nonequilibrium pressure-temperature diagram of H₂O ice, Phys. Rev. B 64, 94205-94220 (2001).

46. M. H. Manghnani, S. Tkachev, P.V. Zinin, X. Zhang, V. V. Brazhkin, A. G. Lyapin, I. A. Trojan, Elastic Properties of Superhard Amorphous Carbon Pressure-Synthesized from C₆₀ by Surface Brillouin Scattering, Phys. Rev. B 64, 121403-121406(R) (2001).

47. A. V. Sapelkin, S. C. Bayliss, A. G. Lyapin, and V. V. Brazhkin, Local structure of bulk amorphous and crystalline (GaSb)_1-x(Ge₂)_x, Phys. Rev. B 61, N 3, 1907-1911 (2000).

48. A. G. Lyapin, V. V. Brazhkin, E. L. Gromnitskaya, S. V. Popova, O. V. Stal'gorova, and R. N. Voloshin, S. C. Bayliss, A. V. Sapelkin, Hardening of Fullerite C₆₀ during Temperature-Induced Polymerization and Amorphization under Pressure, Appl. Phys. Lett. 76, N 6, 712-714 (2000).

49. V. V. Brazhkin, Ye. V. Tat’yanin, A. G. Lyapin, S. V. Popova, O. B. Tsiok, and D. V. Balitskii, Martensitic Transition in Single-Crystalline a-GeO₂ at Compression, JETP Lett. 71, N 7, 293-297 (2000).

50. V. V. Brazhkin and A. G. Lyapin, Universal viscosity growth in metallic melts at megabar pressures: the vitreous state of the Earth's inner core, Physics-Uspekhi 43, N 5, 493-508 (2000).

51. A.G. Lyapin, S.V. Popova, V. V. Brazhkin, and N. V. Kalyaeva, High-Pressure Synthesis of Metastable Ternary Solid Solutions between Tetrahedral Semiconductors, Inorganic Materials 36, N 5, 431-436 (2000).

52. V. V. Brazhkin, S. G. Lyapin, I. A. Trojan, R. N. Voloshin,A. G. Lyapin, and N. N. Mel’nik, Anharmonicity of Short-Wavelength Acoustic Phonons in Silicon at High Temperatures, JETP Lett. 72, N 4, 195-198 (2000).

53. S. V. Demishev, A. A. Pronin, N. E. Sluchanko, N. A. Samarin, A. G. Lyapin, V. V. Brazhkin, T. D. Varfolomeeva, S. V. Popova, 1D-3D Crossover in Hopping Conductivity of Carbynes, JETP Lett. 72, N 7, 381-384 (2000).

54. V. V. Brazhkin and A. G. Lyapin, Comment on "New Metallic Crystalline Carbon: Three Dimensionally Polymerized C₆₀ Fullerite", Phys. Rev. Lett. 85, 5671 (2000).

55. B. V. Lebedev, K. B. Zhogova, N. N. Smirnova, V. V. Brazhkin, A. G. Lyapin, Thermodynamic properties of 1D and 2D polymerized fullerite C₆₀  between 0 and 340 K at standard pressure, Thermochimica Acta 364, 23-33 (2000).