論文リスト

Preprints / Published papers/ その他

PREPRINTS


  1. K. Miyagawa, S. Maegochi, K. Ienaga, S. Kaneko and S. Okuma
    Effects of the velocity on the reversible-irreversible transition in a periodically sheared vortex system



     

PUBLISHED PAPERS (1995-)

 

  1. K. Ienaga, T. Hayashi, Y. Tamoto, S. Kaneko, and S. Okuma
    Quantum Criticality inside the Anomalous Metallic State of a Disordered Superconducting Thin Film
    Phys. Rev. Lett. (2020), accepted for publication.

  2. 家永紘一郎, 大熊 哲
    熱電効果で探る2 次元超伝導体の量子臨界現 象と渦糸状態
    固体物理 55 No. 12 (2020), 印刷中

  3. S. Maegochi, K. Ienaga, S. Kaneko, and S. Okuma
    Critical behavior near the reversible-irreversible transition in periodically driven vortices under random local shear (OPEN ACCESS)
    Scientific Reports 9 (2019) 16447(1-9): doi:10.1038/s41598-019-51060-9.

  4. J. Wu, F. Lin, M. Sasase, K. Ienega, Y. Obata, R. Yukawa, K. Horibe, H. Kumigashira, S. Okuma, T. Inoshita, and H. Hosono
    Natural van der Waals Heterostructural Single Crystals with both Magnetic and Topological Properties (OPEN ACCESS)
    Science Advances 5 (2019) eaax9989.

  5. M. Dobroka, K. Ienaga, Y. Kawamura, S. Kaneko, and S. Okuma
    Competition between dynamic ordering and disordering for vortices driven by superimposed ac and dc forces (OPEN ACCESS)
    New J. Phys. 21 (2019) 043007(1-10).

  6. K. Ienaga, T. Arai, T. Hayashi, S. Kaneko, and S. Okuma
    Detection of the vortex-liquid phase in superconducting films by Nernst effect (OPEN ACCESS)
    J. Phys.: Conf. Ser. 1293 (2019) 012022(1-4).

  7. S. Maegochi, M. Dobroka, K. Ienaga, S. Kaneko, and S. Okuma
    Time evolution of the vortex configuration associated with dynamic ordering detected by dc drive (OPEN ACCESS)
    J. Phys.: Conf. Ser. 1293 (2019) 012023(1-5).

  8. J. Lustikova, Y. Shiomi, N. Yokoi, N. Kabeya, N. Kimura, K. Ienaga, S. Kaneko, S. Okuma,
    S. Takahashi, and E. Saitoh
    Vortex rectenna powered by environmental fluctuations (OPEN ACCESS) (プレスリリース)
    Nature Commun. 9, 4922 (2018)

  9. Y. Kawamura, S. Moriya, K. Ienaga, S. Kaneko, and S. Okuma
    Nonequilibrium depinning transition of ac driven vortices with random pinning (OPEN ACCESS)
    New J. Phys. 19 (2017) 093001(1-8).

  10. M. Dobroka, Y. Kawamura, K. Ienaga, S. Kaneko, and S. Okuma
    Memory formation and evolution of the vortex configuration associated with random organization (OPEN ACCESS)
    New J. Phys. 19 (2017) 053023(1-11).

  11. N. Sohara, A. Ochi, E. Murakami, K. Ienaga, S. Kaneko, N. Kokubo, and S. Okuma
    Vortex states near absolute zero in a weak-pinning amorphous MoxGe1-x film probed by pulsed mode-locking resonance (OPEN ACCESS)
    J. Phys.: Conf. Ser. 871 (2017) 012022(1-8).

  12. K. Ienaga, M. Dobroka, Y. Shirahata, Y. Kawamura, S. Kaneko, and S. Okuma
    Random organization of vortices under an anisotropic condition (OPEN ACCESS)
    J. Phys.: Conf. Ser. 871 (2017) 012020(1-4).

  13. 大熊 哲(分担)
    磁束系の動的相図と非平衡ダイナミクス
    「超伝導磁束状態の物理」, 裳華房, 2017

  14. 大熊 哲
    超伝導渦糸格子のダイナミクスと非平衡相転移
    固体物理 51 No. 10 (2016) 547-566 (Selected as a cover page)

      
  15. A. Ochi, N. Sohara, S. Kaneko, N. Kokubo, and S. Okuma
    Equilibrium and Dynamic Vortex States near Absolute Zero in a Weak Pinning Amorphous Film 
    J. Phys. Soc. Jpn. 85, No.4 (2016) 044701(1-7).

  16. A. Ochi, Y. Kawamura, T. Inoue, T. Kaji, M. Dobroka, S. Kaneko, N. Kokubo, and S. Okuma
    Dynamic Melting of Driven Abrikosov Lattices in an Amorphous MoxGe1-x Film in Tilted Field  
    J. Phys. Soc. Jpn. 85 No.3 (2016) 034712(1-6).

  17. Y. Kawamura and S. Okuma
    Dynamics of Superconducting Vortices Driven by Periodic Shear in the Plastic-Flow and Flux-Flow Regimes
    JPS Conf. Proc. 4 (2015) 011007(1-4).

  18. Y. Kawamura and S. Okuma
    Dynamics of Superconducting Vortices Driven by Periodic Shear in the Plastic-Flow and Flux-Flow Regimes
    JPS Conf. Proc. 4 (2015) 011007(1-4).

  19. Y. Kawamura, Y. Matsumura, Y. Yamazaki, S. Kaneko, N. Kokubo, and S. Okuma
    Unusual current-voltage characteristics and dynamic correlation of rotating vortex-lattice rings
    Supercond. Sci. Technol. 28 (2015) 045002(1-7).

  20. E. Murakami, A. Ochi, Y. Kawamura, S. Kaneko, and S. Okuma
    Magnetic-Field-Induced Metallic Phase at Low Temperature in Two-Dimensional Superconductors
    Phys. Procedia 65 (2015) 101-104.

  21. R. Nitta, Y. Kawamura, S. Kaneko, and S. Okuma
    Reversible to irreversible flow transition of periodically driven vortices in the strip sample
    Phys. Procedia 65 (2015) 105-108.

  22. K. Kamimura, K. Nagatani, and S. Okuma
    Rearrangement of the Fast Driven Abrikosov Lattice in a Superconducting Amorphous Film in Tilted Field
    JPS Conf. Proc. 2, 010203 (2014)(1-6).

  23. S. Okuma, A. Motohashi, and Y. Kawamura
    Critical dynamics associated with dynamic disordering near the depinning transition in different vortex phases
    Phys. Lett. A 377 (2013) 2990-2994.

  24. S. Okuma, A. Motohashi, and Y. Kawamura
    Scaling analysis on plastic depinning of vortex matter at low temperature in an amorphous MoxGe1-x film
    Supercond. Sci. Technol. 26 (2013) 025013 (1-6).

  25. S. Okuma and A. Motohashi
    Critical behavior associated with transient dynamics near the depinning transition (OPEN ACCESS)
    New J. Phys. 14 (2012) 123021 (1-11).

  26. S. Okuma, D. Shimamoto, and N. Kokubo
    Velocity-induced reorientation of fast driven Abrikosov lattice
    Phys. Rev. B 85 (2012) 064508 (1-5).

  27. S. Okuma, Y. Kawamura, and Y. Tsugawa
    Irreversibility and Dislocation in Periodically Sheared Vortex Matter
    J. Phys. Soc. Jpn. 81 (2012) 114718 (1-6).

  28. S. Okuma, D. Shimamoto, and N. Kokubo
    Dynamic ordering and lattice orientation of driven vortex matter
    J. Phys.: Conf. Ser. 400 (2012) 022093 (1-4).

  29. H. Sato and S. Okuma
    Absence of mode-locking resonance for driven vortices in a thin amorphous a-MoxGe1-x film
    J. Phys.: Conf. Ser. 400 (2012) 022103 (1-4).

  30. S. Okuma, H. Imaizumi, D. Shimamoto, and N. Kokubo
    Quantum melting and lattice orientation of driven vortex matter
    Phys. Rev. B 83 (2011) 064520 (1-7).

  31. S. Okuma, Y. Tsugawa, and A. Motohashi
    Transition from reversible to irreversible flow: Absorbing and depinning transitions in a sheared-vortex system
    Phys. Rev. B 83 (2011) 012503.

  32. D. Shimamoto, S. Okuma, and N. Kokubo
    Lattice orientation of driven vortex matter in amorphous superconducting films
    (GCOE2011) J. Phys.: Conf. Ser. 302 (2011) 012027 (1-4).

  33. A. Motohashi and S. Okuma
    Plastic depinning in superconducting vortices
    (GCOE2011) J. Phys.: Conf. Ser. 302 (2011) 012029 (1-4).

  34. H. Sato and S. Okuma
    Mode-locking resonance for driven vortex matter in thick and thin superconducting films
    (GCOE2011) J. Phys.: Conf. Ser. 302 (2011) 012028 (1-4).

  35. Y. Matsumura, S. Okuma, and K. Kokubo
    Rotating vortex-lattice rings in superconductors 
    Physica E 43 (2011) 707-710.

  36. S. Okuma, Y. Yamazaki, and K. Kokubo
    Novel vortex dynamics in Corbino-disk superconductors
    9th Int. Conf. on Materials and Mechanisms of Superconductivity (M2S) (invited talk): Physica C 470 (2010) S776-S778.

  37. S. Okuma, T. Ichimura, H. Takeya, and K. Hirata
    Unusual Pinning Induced by Vortex Motion in YNi2B2C
    Physica C 470 (2010) S844-S845.

  38. S. Okuma, Y. Suzuki, and Y. Tsugawa
    Reversible to Irreversible Flow Transition in Driven Vortices
    Physica C 470 (2010) S842-S843.

  39. S. Okuma, Y. Yamazaki, and K. Kokubo
    Dynamic response and ordering of rotating vortices in superconducting Corbino disks
    Phys. Rev. B 80 (2009) 220501(R) (1-4).

  40. S. Okuma, H. Imaizumi, and K. Kokubo
    Intrinsic quantum melting of a driven vortex lattice in amorphous a-MoxGe1-x films
    Phys. Rev. B 80 (2009) 132503 (1-4).

  41. S. Okuma, Y. Suzuki, and K. Kokubo
    Flow noise of driven vortex matter in amorphous superconducting films
    AIP Conf. Proc. 1129 (2009) 93-96 (Selected as an oral presentation) (ICNF2009)

  42. S. Okuma, J. Inoue, and K. Kokubo
    Broadband noise of driven vortices at the mode-locking resonance
    Proc. Int. Conf. on Noise and Fluct., Pisa, 2009 Eds. M. Macucci and G. Basso (ICNF2009): AIP Conf. Proc. 1129 (2009) 117-120:

  43. S. Okuma, Y. Suzuki, and N. Kokubo
    Order-disorder transition and flow noise in an a-MoxGe1-x film
    Physica C 469 (2009) 1096-1098.

  44. S. Okuma, H. Imaizumi, Y. Suzuki, and N. Kokubo
    Dynamic melting of driven vortex matter below 1 K
    Physica C 469 (2009) 1063-1066.

  45. S. Okuma, T. Ichimura, H. Takeya, K. Hirata
    Anomalous vortex dynamics in YNi2B2C
    Physica C 469 (2009) 1093-1095.

  46. 大熊 哲, 井上 甚, 小久保伸人
    超伝導渦の動的秩序化
    固体物理 44, No. 1 (2009) 1-15 (Selected as a cover page).

  47. S. Okuma, Y. Suzuki, K. Kashiro, and N. Kokubo
    Order-disorder transition and flow noise for vortices in amorphous films
    25th Int. Conf. Low Temp. Phys., (LT25) 2008 (Selected as an oral presentation);
    J. Phys.: Conf. Ser. 150 (2009) 052199 (1-4).

  48. S. Okuma, H. Imaizumi, K. Suzuki, Y. Suzuki, and N. Kokubo
    Dynamic melting of driven vortices at low temperature in a-MoxGe1-x films
    J. Phys.: Conf. Ser. 150 (2009) 052200 (1-4).

  49. S. Okuma, Y. Suzuki, Y. Yamazaki, and N. Kokubo
    Motion of current-driven vortex solids with weak pinning in the Corbino disk
    Physica C 468 (2008) 613-616: Proc. 5th Conf. on Vortex Matter in Nanostructured Superconductors (VORTEX V), Rhodes, Greece, 2007 (invited).

  50. S. Okuma and Y. Suzuki
    Effects of heating on superconducting properties of amorphous a-MgxB1-x films
    Physica C 468 (2008) 1178-1180.

  51. S. Okuma, Y. Suzuki, Y. Yamazaki, J. Inoue, and N. Kokubo
    Dynamic response of circulating flux flow in amorphous superconducting films
    Physica C 468 (2008) 1322-1324.

  52. S. Okuma, K. Kashiro, and N. Kokubo
    Vortex states in the peak effect regime of a-MoxGe1-x films probed by noise
    Physica C 468 (2008) 1319-1321.

  53. S. Okuma, K. Kashiro, Y. Suzuki, and N. Kokubo
    Order-disorder transition of vortex matter in a-MoxGe1-x films probed by noise
    Phys. Rev. B 77 (2008) 212505.

  54. S. Okuma, J. Inoue, and N. Kokubo
    Suppression of broadband noise at mode locking in driven vortex matter
    Phys. Rev. B 76 (2007) 172503.
    (Selected for the Virtual Journal of Applications of Superconductivity 13 (2007)

  55. S. Okuma, S. Morishima, and M. Kamada
    Dynamic Transition and Metastability in the Nonlinear I-V Regime in a Corbino-Disk Superconductor
    Phys. Rev. B 76 (2007) 224521.
    (Selected for the Virtual Journal of Applications of Superconductivity 14 (2008)

  56. S. Okuma, J. Inoue, and N. Kokubo
    Mode locking and noise of driven vortices near the peak-effect regime
    Physica C 463 (2007) 290-293.

  57. S. Okuma, K. Suzuki, and M. Kohara
    Vortex Phase Diagram and Dynamics near T=0 in the Liquid Phase of a Thick a-MoxGe1-x Film
    Int. J. Mod. Phys. B 21 (2007) 3371 - 3378 (Invited)..

  58. S. Okuma, K. Kashiro, and N. Kokubo
    Vortex states and peak effect at low temperature in thick amorphous films with weak pinning
    Int. J. Mod. Phys. B 21 (2007) 3387 - 3393..

  59. S. Okuma, K. Suzuki, and N. Kokubo
    Vortex phase diagram and dynamics at low temperature in a thick a-MoxGe1-x film
    Physica C 463 (2007) 232-235.

  60. S. Okuma, J. Inoue, and N. Kokubo
    Broadband noise across the mode-locking freezing in driven vortex matter
    Int. J. Mod. Phys. B 21 (2007) 3379 - 3386..

  61. S. Okuma, K. Suzuki, and N. Kokubo
    Vortex phase diagram and dynamics near T=0 probed by voltage noise in amorphous superconducting films
    AIP Conf. Proc. 922 (2007) 237-240..

  62. S. Okuma, J. Inoue, and N. Kokubo
    Noise and mode-locking resonance of driven vortices in type-II superconductors
    AIP Conf. Proc. 922 (2007) 233-236.

  63. S. Okuma, K. Kashiro, and N. Kokubo
    Vortex states near the peak effect regime detected by voltage noise
    AIP Conf. Proc. 922 (2007) 245-248.

  64. S. Okuma and S. Morishima
    Anomalous voltage oscillation and metastability in the strongly nonlinear I-V regime
    Physica C 460-462 (2007) 1278-1279. .

  65. S. Okuma and M. Kohara
    Vortex phase diagram and vortex dynamics at low temperature in a thick a-MgxB1-x film
    Physica C 460-462 (2007) 1276-1277.

  66. S. Okuma, T. Kishimoto, and K. Kainuma
    Vortex dynamics detected by voltage noise in the quantum-liquid phase of thick amorphous films
    Physica C 460-462 (2007) 1274-1275. .

  67. S. Okuma and T. Katagiri a
    Motion of current-driven vortex solids in the Corbino-disk of amorphous superconducting films
    Physica C 460-462 (2007) 1280-1281. .

  68. S. Okuma, K. Kainuma, and M. Kohara
    Vortex Flow and Shot Noise in the Quantum-Liquid Phase of Thick Amorphous Films
    Phys. Rev. B 74 (2006) 144509(1-5) (as a regular article).

  69. S. Okuma, K. Kainuma, and T. Kishimoto
    Anomalous Vortex Flow and Noise in the Quantum Liquid Phase of Amorphous Films
    Proc. Conf. on Vortex Matter in Nanostructured Superconductors (VORTEX IV), Crete, Greece, 2005 (invited); Physica C 437-438 (2006) 242-246.

  70. S. Okuma, K. Kainuma, and T. Kishimoto
    Unusual Vortex Motion in the Quantum-Liquid Phase of Amorphous Films
    AIP Conf. Proc. 85 (2006) 967-968.

  71. S. Okuma, T. Kishimoto, and K. Kainumao
    Electronic Transport in the Low-Temperature Liquid Phase of a Thin Amorphous Film without the Edge Effects
    AIP Conf. Proc. 85 (2006) 969-970.

  72. S. Okuma and S. Morishima
    Plastic Flow and Dynamic Correlation in the Driven Vortex Glass in the Corbino Disk
    AIP Conf. Proc. 85 (2006) 845-846.

  73. S. Okuma and S. Morishima
    Voltage Oscillation due to Vortex-Antivortex Fluctuations in the Corbino-Disk Superconductork
    AIP Conf. Proc. 85 (2006) 847-848.

  74. S. Okuma
    Unusual vortex dynamics in the quantum-liquid phase of a-MoxSi1-x films.
    Proc. 10th International Vortex State Studies Workshop, Mumbai, India, 2005 (Invited participant), Pram. J. Phys. 66 (2006) 261-269.

  75. S. Okuma, K. Kainuma, and T. Kishimoto., and M. Kohara
    Flux-flow noise driven by quantum fluctuations in a thick amorphous film
    Physica C 445 (2006) 210-213.

  76. S. Okuma, T. Kishimoto, and K. Kainuma
    Vortex dynamics in two-dimensional amorphous films without edge effects
    Physica C 445 (2006) 240-244.

  77. S. Okuma, T. Kishimoto, and K. Kainuma
    Electronic Transport and Vortex Dynamics in the Low-Temperature Liquid Phase of an Ultrathin Corbino Disk
    Physica C 437 (2006) 247-250.

  78. S. Okuma, M. Kobayashi, and M. Kamada
    Anomalous Vortex Motion in the Quantum-Liquid Phase of a-MoxSi1-x Films
    Phys. Rev. Lett. 94 (2005) 047003.
    (Selected for the Virtual Journal of Applications of Superconductivity 8 (2005))

  79. E. Saitoh, K. Harii, H. Miyajima, T. Yamaoka, and S. Okuma
    Critical Phenomena in Chiral Symmetry Breakdown of Micromagnetic Configurations in an Nanostructured Ferromagnetic Ring
    Phys. Rev. B 71 (2005) 172406 (4 pages)

  80. S. Okuma, M. Kobayashi, K. Kainuma, and M. Morita
    Anomalous vortex dynamics in the low-temperature liquid phase of a thin a-MoxSi1-x film
    Physica C 426 (2005) 23-27.

  81. S. Okuma, S. Morishima, and M. Kamada
    Large vortex-density fluctuations induced by current in the Corbino disk
    Physica C 426 (2005) 158-162.

  82. S. Okuma and S. Morishima
    Current-driven Large Density Fluctuations of Vortices and Antivortices in the Corbino Disk
    Proc. 18th International Conference on Noise and Fluctuations ICNF05, Salamanca, Spain, 2005, AIP Series of Conference Proceedings (2005) 167-170.

  83. S. Okuma, K. Kainuma, and T. Kishimoto
    Unusual Fluctuations of Flux Flow at Low Temperature in Superconducting Films.
    Proc. 18th International Conference on Noise and Fluctuations ICNF05, Salamanca, Spain, 2005, AIP Series of Conference Proceedings (2005) 117-120.

  84. M. Morita and S. Okuma
    Electronic Transport at Low Temperature below the Field-Driven Superconductor-Insulator Transition in Thin a-MoxSi1-x Films
    Physica C 426 (2005) 153-157.

  85. S. Okuma and M. Kamada
    Vortex Dynamics and Possible Vortex States just below the Vortex-Glass Phase
    Phys. Rev. B 70 (2004) 014509 (6 pages) .
    (Selected for the Virtual Journal of Applications of Superconductivity 7 (2004))

  86. S. Okuma and M. Kamada
    Current-driven vortex dynamics at zero field in thick and thin films probed by voltage noise
    J. Phys. Soc. Jpn 73 (2004) 2807-2812.

  87. M. Kamada and S. Okuma
    Plastic Motion of Current-Driven Vortex Glass in the Corbino Disk
    J. Phys. Soc. Jpn. 73 (2004) 526-529.

  88. S. Okuma, M. Kamada, and M. Kobayashi
    Crossover from thermal to quantum liquid regime in a thick amorphous film
    Physica C 412 (2004) 539-543. .

  89. M. Kamada, Y. Watanabe, and S. Okuma
    Unusual vortex dynamics in the Meissner phase in the Corbino disk
    Physica C 412 (2004) 535-538.

  90. S. Okuma, K. Amemori, and S. Togo
    Vortex-Glass Transition and Vortex Phase Diagram in Thick Amorphous MgxB1-x Films
    Proc. 7th Int. Conf. on Materials and Mechanisms of Superconductivity and High Temperature
    Superconductors (M2S-7), Rio de Janeiro, 2003
    (Selected as an oral presentation), Physica C 408-410 (2004) 493-494.

  91. S. Okuma, F. Saito, K. Amemori, and M. Kobayashi
    Critical Dynamics of Vortices near the second-order transition and quantum fluctuations
    Proc. 7th Int. Conf. on Materials and Mechanisms of Superconductivity and High Temperature
    Superconductors (M2S-7), Rio de Janeiro, 2003
    , Physica C 408-410 (2004) 589-590.

  92. M. Kamada and S. Okuma
    Dynamics of the Vortex Glass in the Corbino Disk Geometry
    Proc. 7th Int. Conf. on Materials and Mechanisms of Superconductivity and High Temperature
    Superconductors (M2S-7), Rio de Janeiro, 2003 ,
    Physica C 408-410 (2004) 597-598.

  93. S. Okuma, S. Togo, and M. Morita
    Enhancement of the Quantum-Liquid Phase by Increased Resistivity in Thick Amorphous MoxSi1-x Films
    Phys. Rev. Lett. 91 (2003) 067001(1-4).

  94. S. Okuma, S. Togo, and K. Amemori
    Observation of Superconductivity in Thick Amorphous MgxB1-x Films
    Phys. Rev. B 67 (2003) 172508.
    (Selected for the Virtual Journal of Applications of Superconductivity 4 (2003))

  95. S. Okuma, S. Togo, M. Morita, F. Saito, and K. Amemori
    Quantum Fluctuations and Vortex Phase Diagram in Uniformly Disordered Amorphous Films
    Proc. 4th Int. Conf. on New Theories, Discoveries, and Applications of Superconductors and Relataed Materials(New3SC-4), San Diego, California, 2003 ( Invited paper );
    Int. J. Mod. Phys. B 17 (2003) 3396-3400.

  96. S. Okuma, S. Togo, and K. Amemori
    Superconducting Properties and Possible Vortex Phase Diagram in Thick Amorphous MgxB1-x Films
    Int. J. Mod. Phys. B 17 (2003) 3688-3693.

  97. M. Morita and S. Okuma
    Magnetoresistance and Current-Induced Vortex Motion at T→0 in Two-Dimensional Vortex Glass
    Int. J. Mod. Phys. B 17 (2003) 3445-3448.

  98. S. Okuma, S. Togo, and K. Amemori
    Superconductivity and Vortex States in Thick Amorphous MgxB1-x Films
    Physica C 392 (2003) 336-340.

  99. S. Okuma, F. Saito, S. Togo, M. Morita, and K. Amemori
    Effects of Disorder and Dimensionality on the Vortex Phase Diagram at Low Temperature in Amorphous Films
    Physica C 392 (2003) 410-413.

  100. M. Morita and S. Okuma
    Magnetoresistance and Vortex States below the 2D Superconductor-Insulator Transition near T=0
    Physica C 392 (2003) 406-409.

  101. M. Kamada, Y. Arakawa, and S. Okuma
    I-V Characteristics of Thick a-MoxSi1-x Films in the Corbino Disk Geometry
    Physica C 392 (2003) 424-427.

  102. S. Okuma and M. Kamada
    Dynamics of Current-Driven Vortex Glass Probed by Voltage Noise
    Proc. 17th International Conference on Noise and Fluctuations ICNF03, Prague, Czech Republic, 2003, (Selected as an oral presentation) pp.179-182 .

  103. S. Okuma, F. Saito, and M. Morita
    Suppression of the Vortex-Glass Phase in Quasi-2D a-MoxSi1-x Films
    J. Low Temp. Phys. 131 (2003) 1019-1023.

  104. S. Okuma, S. Togo, D. Sanno, K. Amemori and M. Morita
    Superconducting Properties in Amorphous MgxB1-x Films
    J. Low Temp. Phys. 131 (2003) 1111-1115.

  105. S. Okuma, S. Togo, and M. Morita
    Vortex States at Low Temperature and Disorder in Thick a-MoxSi1-x Films
    Proc. LT 23 (Hiroshima, 2002); Physica B 329-333 (2003) 1389-1390.

  106. M. Morita and S. Okuma
    Anomalous Magnetoresistance below the 2D Superconductor-Insulator Transition
    Proc. LT 23 (Hiroshima, 2002); Physica B 329-333 (2003) 1393-1394.

  107. M. Kamada and S. Okuma
    Vortex States just below the Vortex-Glass Phase Probed by Voltage Noise
    Proc. LT 23 (Hiroshima, 2002); Physica C 388-389 (2003) 783-784.

  108. S. Okuma, M. Morita, and Y. Imamoto
    Vortex Phase Diagram and Quantum Fluctuations in Thick a-MoxSi1-x Films
    Phys. Rev. B 66 (2002) 104506 (8 pages) (regular article).

  109. S. Okuma, S. Togo, Y. Imamoto, and F. Saito
    Quantum Liquid of Vortices at T = 0 in Thick a-MoxSi1-x Films
    Physica C 378-381 (2002) 453-456.

  110. M. Morita and S. Okuma
    Anisotropic Magnetoresistance on the Insulating Side of the Zero-Field Superconductor-Insulator Transition
    Physica C 378-381 (2002) 598-601.

  111. M. Kamada, Y. Ogawa, and S. Okuma
    Voltage Noise near the Vortex-Liquid-Vortex-Glass Boundary
    Physica C 378-381 (2002) 602-606.

  112. 大熊 哲, 森田真規子
    乱れた超伝導体の極低温ボルテックス状態と超伝導絶縁体転移
    固体物理 37 (2002) 805-816.

  113. S. Okuma, Y. Imamoto, and M. Morita
    Vortex Glass Transition and Quantum Vortex Liquid at Low Temperature in a Thick a-MoxSi1-x Film
    Phys. Rev. Lett. 86 (2001) 3136-3139 .

  114. S. Okuma, S. Shinozaki, and M. Morita
    Electronic Transport and Possible Vortex States at T=0 in Highly Disordered Ultrathin Films of a-MoxSi1-x
    Phys. Rev. B 63 (2001) 54523 (regular article).

  115. S. Okuma and M. Morita
    Vortex States at Low Temperature in Disordered Thin and Thick Films of a-MoxSi1-x
    Proc. 2nd Int. Conf. on Mesoscopic and Strongly Correlated Electron Systems, Moscow, Russia (Invited paper), Phys. Uspekhi (2001) 108-113.

  116. S. Okuma and M. Morita
    Possible Vortex Phase Diagram at Zero Temperature in Disordered 2D Superconductors
    Physica C 357 (2001) 556-559.

  117. S. Okuma, M. Kamada and N. Kokubo
    Current-Induced Voltage Noise at Zero Field in Thick and Thin Films of a-MoxSi1-x
    Physica C 357 (2001) 560-563.

  118. S. Okuma, Y. Imamoto, and M. Morita
    Observation of the Vortex-Glass Transition in the Low-Temperature High-Field Regime in Thick a-MoxSi1-x Films
    Physica C 357 (2001) 466-468.

  119. M. Morita and S. Okuma
    Vortrex States at T =0 in Disordered Thin and Thick Films of a-MoxSi1-x
    Physica C 364 (2001) 530-533.

  120. M. Kamada and S. Okuma
    Vortex Dynamics near Zero Field in 3D and 2D Superconductors
    Physica C 364 (2001) 522-525.

  121. S. Okuma, Y. Imamoto, and M. Morita
    Evidence for the Quantum Vortex Liquid Phase in Thick a-MoxSi1-x Films
    Physica C 364 (2001) 526-529.

  122. S. Okuma and M. Kamada
    Current-Induced Voltage Noise and Vortex Dynamics in Thick a-MoxSi1-x Films
    Proc. 16th International Conference on Noise in Physical Systems and 1/f Fluctuations ICNF, Florida, USA 2001 (Selected as an oral presentation), pp.59-62.

  123. M. Kamada and S. Okuma
    Voltage Fluctuations Associated with Unbinding of Vortex Pairs in the Presence of Current
    Proc. 16th International Conference on Noise in Physical Systems and 1/f Fluctuations ICNF, Florida, USA 2001 (Selected as an oral presentation), pp.55-58.

  124. S. Okuma and N. Kokubo
    Vortex Dynamics in Amorphous MoxSi1-x Films Detected by Voltage Noise
    Phys. Rev. B 61 (2000) 671-677.

  125. S. Okuma and M. Arai
    Evidence of the Vortex-Glass Transition in Homogeneously Disordered Thick Films of a-MoxSi1-x
    J. Phys. Soc. Jpn. 69 (2000) 2747-2750.

  126. S. Okuma, N. Kokubo, and M. Kamada
    Vortex Dynamics below the Kosterlitz-Thouless Transition Detected by Voltage Noise
    Proc. 12th Int. Symp. on Superconductivity (2000) pp.296-298. (Selected as an oral presentation)

  127. S. Okuma, S. Shinozaki, and M. Morita
    Magnetoresistance and Vortex States near the Superconductor-Insulator Transition in a-MoxSi1-x Films
    Proc. 12th Int. Symp. on Superconductivity (2000) pp.398-400.

  128. S. Okuma, M. Arai, and N. Kokubo
    Vortex Phase Diagram of Disordered Films of Granular In and Amorphous a-MoxSi1-x
    Physica B 284-288 (2000) 640-641.

  129. N. Kokubo and S. Okuma
    Vortex Dynamics in the Mixed State of Amorphous a-MoxSi1-x Films
    Physica B 284-288 (2000) 865-866.

  130. N. Kokubo, M. Mutou, M. Kamada, and S. Okuma
    Current-Induced Voltage Noise below the Kosterlitz-Thouless Transition
    Physica B 284-288 (2000) 981-982.

  131. S. Okuma, M.Arai, and N. Kokubo
    The Vortex-Glass Transition and Phase Diagram in Low-TC Superconductors
    Advances in Superconductivity XI 1 (Springer-Verlag, Tokyo, 1999) 203-206. (Selected as an oral presentation at 11th Int. Symp. on Superconductivity )

  132. S. Okuma, S.Shinozaki, and N.Kokubo
    The T=0 Phase Diagram of the Field-Driven Superconductor-Insulator Transition in 2D
    Advances in Superconductivity XI 1 (Springer-Verlag, Tokyo, 1999) 185-188.

  133. N. Kokubo M. Muto, and S. Okuma
    The Thermally Nucleated Dissipation Process in Zero Field Studied by Voltage Noise
    Advances in Superconductivity XI 1 (Springer-Verlag, Tokyo, 1999) 299-302 .

  134. N. Kokubo and S. Okuma
    Dynamical Properties of Vortices in the Mixed State of Amorphous a-MoxSi1-x
    Advances in Superconductivity XI 1 (Springer-Verlag, Tokyo, 1999) 295-298.

  135. S. Okuma, T. Terashima, and N. Kokubo
    Anomalous Magnetoresistance near the Superconductor-Insulator Transition in Ultrathin Films of a-MoxSi1-x
    Phys. Rev. B 58 (1998) 2816-2819.

  136. S. Okuma, T. Terashima, and N. Kokubo
    Superconductor-Insulator Transition Driven by Magnetic-Field and Disorder in Two-Dimensional MoxSi1-x Films
    Solid State Commun. 106 (1998) 529-533.

     
  137. N. Kokubo, T. Terashima, and S. Okuma
    Voltage Noise of an Amorphous MoxSi1-x Film near the Superconducting Transition in Magnetic Fields
    J. Phys. Soc. Jpn. 67 (1998) 725-728.

     
  138. S. Okuma, T. Terashima, and N. Kokubo
    Superconductor-Insulator Transition in Two-Dimensional a-MoxSi1-x Films
    Advances in Superconductivity X 1 (Springer-Verlag, 1998) 163-166.

  139. S. Okuma, T. Ito, and N. Kokubo
    Frequency Dependence of the Complex Resistivity in the Vortex State
    Advances in Superconductivity X 1 (Springer-Verlag, 1998) 75-78.

  140. N. Kokubo, T. Terashima, and S. Okuma
    Voltage Noise Measurements in Dirty Superconducting Films
    Advances in Superconductivity X 1 (Springer-Verlag, 1998) 79-82.

  141. S. Okuma and N. Kokubo
    Scaling Behavior of the Longitudinal and Hall Resistivities in Indium Films
    Phys. Rev. B 56 (1997) 410-415.

  142. S. Okuma and N. Kokubo
    Universal Critical Scaling of dc and ac Complex Resistivities in an Indium Film near the Vortex-Glass Transition
    Phys. Rev. B 56 (1997) 14138-14142.

  143. 大熊 哲、小久保伸人
    極低温下水晶振動子法による膜厚・吸着原子の測定
    固体物理 32 (1997) 97-103.

  144. S. Okuma and N. Kokubo
    Hall Effect in the Mixed State of In Films
    Advances in Superconductivity IX 1 (Springer-Verlag, 1997) 93-96.

  145. S. Okuma, T. Terashima, and N. Kokubo
    Superconductor-Insulator Transition in Uniformly Disordered Two-Dimensional Films
    Advances in Superconductivity IX 1 (Springer-Verlag, 1997) 191-194.

  146. S. Okuma, H. Yoshida, T. Ito, and N. Kokubo
    Ac Magnetic and Mechanical Response at the Onset of Superconductivity in Magnetic Fields
    Advances in Superconductivity IX 1 (Springer-Verlag, 1997) 199-202.

  147. N. Kokubo and S. Okuma
    Critical Scaling Behavior in the Ac Impedance of Indium Films in Magnetic Fields
    Advances in Superconductivity IX 1 (Springer-Verlag, 1997) 195-198.

  148. S. Okuma and H. Hirai
    Scaling of Current-Resistivity Isotherms of Indium Films in a Magnetic Field
    Physica B 228 (1996) 272-278.

  149. S. Okuma and T. Arai
    Quantum Fluctuations of the Phase near the S-I Transition in 2D
    Advances in Superconductivity VIII 1 (Springer-Verlag, 1996) 53-56.

  150. S. Okuma and H. Hirai
    The Vortex-Glass Transition in Low Temperature Superconductors
    Advances in Superconductivity VIII 1 (Springer-Verlag, 1996) 541-544.

  151. S. Okuma and N. Kokubo
    Unusual Insulating Phase at Low Temperature in Thin Indium Films
    Phys. Rev. B 51 (1995) 15415-15419.

  152. S. Okuma, K. Enya and H. Hirai
    Dimensionality Crossover of the Nonlinear Resistance in Quench-Condensed Indium Films
    J. Phys. Soc. Jpn. 64 (1995) 3397-3402.

  153. S. Okuma and N. Kokubo
    Field-Induced Superconductor-Insulator Transition and Grain Size in Thin Granular Films of Indium
    Solid State Commun. 93 (1995) 1019-1023.

その他

  1. 大熊 哲
    会議だより 第12回渦糸物理国際ワークショップ(Vortex2009)
    固体物理 45 (2010) 55-61.

  2. 大熊 哲
    第22回国際超電導シンポジウム(ISS2009)トピックス:物理化学分野 \\ 超電導Web21, 2009年12月号 pp3-4.
    S. Okuma
    Feature Article: ISS2009 Topics -Physics and Chemistry-
    Superconductivity Web21, Spring Issue, (15 April) (2010) pp 11-12

  3. 大熊 哲
    極低温蒸着装置を用いた2次元超伝導体の研究
    東京大学低温センターだより 19 (1995) 5-13.

  4. 小久保伸人(大熊研/学振DC)
    2次元超伝導体における磁場印加超伝導絶縁体転移(修士論文全文掲載)
    物性研究 64 (1995) 282-307.

  5. 森田真規子(大熊研/学振DC)
    乱れたアモルファス超伝導薄膜の極低温における輸送現象と磁束状態(修士論文全文掲載)
    物性研究 77 (2001) 113-152.

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Okuma Lab, Tokyo Institute of Technology