論文
公開件数:100件
No. 種別 査読の有無 標題 単著・共著区分 著者 誌名 巻号頁 出版日 ISSN DOI URL
1 一般論文

Finite-size effect of critical penetration of Pearl vortices in narrow superconducting flat rings
共著
N. Kokubo, S. Okayasu, and T. Nojima
Journal of Applied Physics
125, 223906-1-223906-6
2019/06/14

10.1063/1.5100497

2 一般論文

Vortex shells in mesoscopic triangles of amorphous superconducting thin films
共著
N. Kokubo, H. Miyahara, S. Okayasu, T. Nojima
Physica C
532
2016/11

10.1016/j.physc.2016.05.009

3 一般論文

Equilibrium and Dynamic Vortex States near Absolute Zero in a Weak Pinning Amorphous Film
共著
Aguri Ochi, Naoya Sohara, Shin-ichi Kaneko, Nobuhito Kokubo, and Satoshi Okuma
Journal of the Physical Society of Japan
85/ 4, 044701-1-044701-7
2016/03/02

10.7566/JPSJ.85.044701

4 一般論文

Dynamic Melting of Driven Abrikosov Lattices in an Amorphous MoxGe1−x Film in Tilted Field
共著
Aguri Ochi, Yasuki Kawamura, Toshiki Inoue, Tetsuya Kaji, Dobroka Mihaly, Shin-ichi Kaneko, Nobuhito Kokubo, Satoshi Okuma
Journal of the Physical Society of Japan
85/ 3, 034712-1-034712-6
2016/02/12

10.7566/JPSJ.85.034712

5 一般論文

Commensurate and incommensurate Vortex States Confined in Mesoscopic Triangles of Weak Pinning Superconducting Thin Films
共著
N. Kokubo, H. Miyahara, S. Okayasu, and T. Nojima 
Journal of the Physical Society of Japan
83/ 9, 043704-1-043704-04
2015/03/12

10.7566/JPSJ.84.043704

6 一般論文

Unusual current–voltage characteristics and dynamic correlation of rotating vortex-lattice rings
共著
Y Kawamura, Y Matsumura, Y Yamazaki, S Kaneko, N Kokubo and S Okuma
Superconductor Science and Technology
83/ 9, 045002-1-045002-7
2015/02/05

10.1088/0953-2048/28/4/045002

7 一般論文

Direct Imaging of Vortex Polygons and Vortex Shells in Mesoscopic Squares of a Weak Pinning Superconducting Thin Film
共著
N. Kokubo, S. Okayasu, T. Nojima, H. Tamochi, and B. Shinozaki 
Journal of the Physical Society of Japan
83/ 9, 083704-1-083704-05
2014/07/10

10.7566/JPSJ.83.083704

8 一般論文

Flow and Tilt-Induced Orientation of the Moving Vortex Lattice in an Amorphous NbGe Superconducting Thin Film
共著
N. Kokubo, T. Yoshimura, and B. Shinozaki
Journal of the Physical Society of Japan
82/ 9, 094702-1-094702-07
2013/07/31

10.7566/JPSJ.82.094702

9 一般論文

Quantum melting and lattice orientation of driven vortex matter

S. Okuma, H. Imaizumi, D. Shimamoto, and N. Kokubo
Physical Review B
83, 064520-1-064520-7-
2011/02



10 一般論文

Transport properties and microstructures of polycrystalline In2O3–ZnO thin films

K. Makise, K. Mitsuishi, N. Kokubo, T. Yamaguchi, B. Shinozaki, K. Yano, K. Inoue, and H. Nakamura
Journal of Applied Physics
108, 023704-1-023704-6-
2010/07



11 一般論文

Scanning SQUID Microscope Study of Vortex Polygons and Shells in Weak Pinning Disks of an Amorphous Superconducting Film

N. Kokubo, S. Okayasu, A. Kanda, and B. Shinozaki
Physical Review B
82, 014501-1- 014501-8-
2010/07



12 一般論文

Lattice orientations of driven vortex matter in amorphous MoGe films

N. Kokubo, B. Shinozaki and P. H. Kes
Physica C
470, 43-47
2010/01



13 一般論文

Dynamic response and ordering of rotating vortices in superconducting Corbino disks

S. Okuma and Y. Yamazaki and N. Kokubo
Physical Review B
80, 220501-1-220501-4-
2009/12



14 一般論文

Intrinsic quantum melting of a driven vortex lattice in amorphous MoxGe1-x films

S. Okuma, H. Imaizumi, and N. Kokubo
Physical Review B
80, 132503-1- 132503-4-
2009/10



15 一般論文

Order-disorder transition of vortex matter in a-MoxGe1-x films probed by noise

S. Okuma, K. Kashiro, Y. Suzuki, and N. Kokubo
Physical Review B
77, 212505-1-212505-4-
2008/06



16 一般論文

Observation of an extended magnetic field penetration in amorphous superconducting MoGe films

T. Nishio, S. Okayasu, J. Suzuki, N. Kokubo, and K. Kadowaki
Physical Review B
77, 052503-1-052503-4-
2008/02



17 一般論文

Suppression of broadband noise at mode locking in driven vortex matter

S. Okuma, J. Inoue, and N. Kokubo
Physical Review B
76, 172503-1-172503-4-
2007/11



18 一般論文

Dynamic ordering of driven vortex matter in the peak effect regime of amorphous MoGe films and 2H-NbSe2 crystals

N. Kokubo, T. Asada, K. Kadowaki, K. Takita, T. G. Sorop, P. H. Kes
Physical Review B
75, 184512-1-184512-8-
2007/05



19 一般論文

Vortex-slip transitions in superconducting a-NbGe mesoscopic channels

N. Kokubo, T.G. Sorop, R. Besseling, and P. H. Kes
Physical Review B
73, 224514 -1-224514 -8-
2006/06



20 一般論文

Peak effect and dynamic melting of vortex matter in NbSe2 crystals

N. Kokubo, K. Kadowaki, K. Takita
Physical Review Letters
95, 177005-1-177005-4-
2005/10



21 一般論文

Dynamic ordering and frustration of confined vortex rows studied by mode-locking experiments

N. Kokubo, R. Besseling, P. H. Kes
Physical Review B
69, 064504-1-064504-10-
2004/02



22 一般論文

Dynamic melting of confined vortex matter

R. Besseling, N. Kokubo, P. H. Kes
Physical Review Letters
91, 177002-1-177002-4-
2003/10



23 一般論文

Mode locking of vortex matter driven through mesoscopic channels

N. Kokubo, R. Besseling, V. M. Vinokur, P. H. Kes
Physical Review Letters
88, 247004-1-247004-4-
2002/06



24 一般論文

Hall-conductivity sign change and fluctuations in amorphous NbxGe1-x films

N. Kokubo, J. Aarts, P. H. Kes
Physical Review B
64, 014507-1-014507-5-
2001/06



25 一般論文

Vortex dynamics in amorphous MoxSi1-x films detected by voltage noise

S. Okuma, N. Kokubo
Physical Review B
61, 671-677
2000/01



26 一般論文

Superconductor-insulator transition driven by magnetic-field and disorder in two dimensional MoxSi1-x films

S. Okuma, T. Terashima, N. Kokubo
Solid State Communication
106, 529-533
1998/09



27 一般論文

Anomalous magnetoresistance near the superconductor-insulator transition in Ultrathin Films of a- MoxSi1-x

S. Okuma, T. Terashima, N. Kokubo
Physical Review B
58, 2816-2819
1998/08



28 一般論文

Voltage noise of an amorphous MoxSi1-x film near the superconducting transition in magnetic fields

N. Kokubo, T. Terashima, S. Okuma
Journal of the Physical Society of Japan
67, 725-728
1998/03



29 一般論文

Universal critical scaling of dc and ac complex resistivities in an indium film near the vortex-glass transition

S. Okuma, N. Kokubo
Physical Review B
56, 14138-14142
1997/12



30 一般論文

Scaling behavior of the longitudinal and Hall resistivities in indium films

S. Okuma, N. Kokubo
Physical Review B
56, 410-415
1997/07



31 一般論文

Unusual insulating phase at low temperature in thin indium films

S. Okuma, N. Kokubo
Physical Review B
51, 15415-15419
1995/06



32 一般論文

Field-induced superconductor-insulator transition and grain size in thin granular films of indium

S. Okuma, N. Kokubo
Solid State Communication
93, 1019-1023
1995/03



33 国際会議プロシーディングス等

Flux-flow instability in 2H-NbSe2 superconducting thin crystals stamped on SiO2/Si substrates
共著
J Yoshida, H Ando and N Kokubo
J. Phys.: Conf. Ser.
969, 012073-1-012073-6
2018



34 国際会議プロシーディングス等

Direct observation of magnetic flux and interstitial vortices in perforated mesoscopic squares of superconducting films
共著
M Mitsuishi, N Kokubo, K Kitano, S Okayasu, T Nojima and T Sasaki
J. Phys.: Conf. Ser.
969, 012074-1-012074-6
2018



35 国際会議プロシーディングス等

Managing the Learning Quality in Physics by e-Learning Improvement with Collaborative Education
共著
M. Kanenaga, M. Suzuki, K. Abe, J. Nakamura, T. Takada, N. Kokubo and Y. Fuseya
Proceedings of the 12th Asia Pacific Physics Conference
1, 017018-1-017018-4
2014/07/15



36 国際会議プロシーディングス等

Orientation of a Moving Vortex Lattice in an Amorphous Mo1-x Gex Superconducting Film

N. Kokubo, H. Tamochi, B. Shinozaki, T. Nishizaki and N. Kobayashi
J. Phys.: Conf. Ser.
400, 022057-
2012



37 国際会議プロシーディングス等

Dynamic ordering and lattice orientation of driven vortex matter

S. Okuma, D. Shimamoto, and N. Kokubo
J. Phys.: Conf. Ser.
400, 022093-
2012



38 国際会議プロシーディングス等

Rotating vortex-lattice rings in superconductors

Y. Matsumura, S. Okuma, N. Kokubo
Physica E
43, 707–710-
2011



39 国際会議プロシーディングス等

Lattice orientation of driven vortex matter in amorphous superconducting film

D. Shimamoto, S. Okuma, and N. Kokubo
J. Phys.: Conf. Ser.
302, 012027-1-012027-4-
2011



40 国際会議プロシーディングス等

Novel vortex dynamics in Corbino-disk superconductors

S. Okuma and Y. Yamazaki and N. Kokubo
Physica C
470, S776–S778-
2010



41 国際会議プロシーディングス等

量子化磁束のフロー状態とメゾスコピック性

小久保伸人
九州大学低温センターだより(ISSN 1881-9036)
3, 22-29
2009



42 国際会議プロシーディングス等

Superconductivity in In2O3-ZnO crystalline films

B. Shinozaki, N. Kokubo, S. Takada, T. Yamaguti, K. Yamada, K. Makise, K. Yano, K. Inoue, and H. Nakamura
J. Phys.: Conf. Ser.
150, 052237-1-052237-4-
2009



43 国際会議プロシーディングス等

Superconductivity in transparent zinc-doped In2O3 films having low carrier density

K. Makise, N. Kokubo, S. Takada, T. Yamaguti, S. Ogura, K. Yamada, B.Shinozaki, K. Yano, K. Inoue, and H. Nakamura
Sci. Technol. Adv. Mater.
9, 044208-1-044208-6-
2009



44 国際会議プロシーディングス等

Annealing effect on the superconductivity of In2O3-ZnO thin films

B. Shinozaki, N. Kokubo, K. Makise S. Takada, T. Yamaguti, S. Ogura, K. Yamada, K. Yano, and H. Nakamura
Physica C
469, 956-959
2009



45 国際会議プロシーディングス等

Dynamic melting of driven vortices at low temperature in a-MoxGe1-x films

S. Okuma, H. Imaizumi, K. Suzuki, Y. Suzuki and N Kokubo
J. Phys.: Conf. Ser.
150, 052200-1-052200-4-
2009



46 国際会議プロシーディングス等

Order-disorder transition and flow noise for vortices in amorphous films

S. Okuma, Y. Suzuki, K. Kashiro and N. Kokubo
J. Phys.: Conf. Ser.
150, 052199-1-052199-4-
2009



47 国際会議プロシーディングス等

Order-disorder transition and flow noise in an a-MoxGe1-x film

S. Okuma, Y. Suzuki, and N. Kokubo
Physica C
469, 1096-1098
2009



48 国際会議プロシーディングス等

Dynamic melting of driven vortex matter below 1 K

S. Okuma, H. Imaizumi, Y. Suzuki, and N. Kokubo
Physica C
469, 1063-1066
2009



49 国際会議プロシーディングス等

Field dependent orientation of driven vortex lattice in amorphous MoGe films

N. Kokubo, B. Shinozaki, and P. H. Kes
J. Phys.: Conf. Ser.
150, 052116-1-052116-4-
2009



50 国際会議プロシーディングス等

History dependent vortex configurations in superconducting disks of amorphous MoGe

N. Kokubo, S. Okayasu, A. Kanda, and B. Shinozaki
J. Phys.: Conf. Ser.
150, 022044-1-022044-4-
2009



51 国際会議プロシーディングス等

Mode locking features of driven vortex matter in an amorphous MoGe film detected by rf impedance technique

N. Kokubo, and B. Shinozaki
Physica C
469, 1099-1101
2009



52 国際会議プロシーディングス等

The Hall effect measurements in the high resistance In2O3-ZnO polycrystalline films

K. Yamada, T. Yamaguti, N. Kokubo, B. Shinozaki, K. Yano, H. Nakamura
Transactions of Materials Research Society of Japan
34, 755-757
2009



53 国際会議プロシーディングス等

Motion of current-driven vortex solids with weak pinning in the Corbino disk

S. Okuma, Y. Suzuki, Y. Yamazaki, N. Kokubo
Physica C
468, 613-616
2008



54 国際会議プロシーディングス等

Mode locking and lattice orientations of vortex matter in amorphous MoGe films

N. Kokubo, B. Shinozaki, P. H. Kes
Physica C
468, 581-584
2008



55 国際会議プロシーディングス等

Dynamic response of circulating flux flow in amorphous films

S. Okuma, Y. Suzuki, Y. Yamazaki, N. Kokubo
Physica C
468, 1322-1324
2008



56 国際会議プロシーディングス等

Vortex states in the peak effect regime of a-MoxGe1-x probed by noise

S. Okuma, K. Kashiro, and N. Kokubo
Physica C
468, 1319-1321
2008



57 国際会議プロシーディングス等

Shell structures of vortices in superconducting disks of an amorphous MoGe

N. Kokubo, S. Okayasu, and B. Shinozaki
Physica C
468, 1316-1318
2008



58 国際会議プロシーディングス等

Vortex states and peak effect at low temperature in thick Amorphous films with weak pinning

S. Okuma, K. Kashiro, and N. Kokubo
International Journal of Modern Physics B
21, 3387-3393
2007



59 国際会議プロシーディングス等

Broadband noise across the mode-locking freezing in driven vortex matter

S. Okuma, J. Inoue, and N. Kokubo
International Journal of Modern Physics B
21, 3379-3386
2007



60 国際会議プロシーディングス等

A trial usage of microprobes for improvement of a scanning SQUID microscope

S. Okayasu, N. Kokubo and I. Kakeya
Physica C
463-465, 294-296
2007



61 国際会議プロシーディングス等

Mode locking and noise of driven vortices near the peak-effect regime

S. Okuma, J. Inoue, and N. Kokubo
Physica C
463-465, 290-293
2007



62 国際会議プロシーディングス等

Vortex phase diagram and dynamics at low temperatures in a thick MoxGe1-x film

S. Okuma, K. Suzuki, and N. Kokubo
Physica C
463-465, 232-235
2007



63 国際会議プロシーディングス等

Peak anomaly of dynamic critical current in NbSe2 crystals

N. Kokubo, T. Asada, K. Kadowaki and K. Takita
Physica C
463-465, 229-231
2007



64 国際会議プロシーディングス等

Noise and mode-locking resonance of driven vortices in type-II superconductors

S. Okuma, J. Inoue, and N. Kokubo
AIP Conf. Proc.
922, 233-236
2007



65 国際会議プロシーディングス等

Vortex states near the peak effect regime detected by voltage noise

S. Okuma, K. Kashiro, and N. Kokubo
AIP Conf. Proc.
922, 245-248
2007



66 国際会議プロシーディングス等

Vortex phase diagram and dynamics near T=0 probed by voltage noise in amorphous superconducting films

S. Okuma, K. Suzuki, and K. Kokubo
AIP Conf. Proc.
922, 237-240
2007



67 国際会議プロシーディングス等

Mode locking of vortex matter in NbSe2 pure single crystals

N. Kokubo, K. Kadowaki, K. Takita
AIP Conference Proceedings
850, 843-844
2006



68 国際会議プロシーディングス等

Dynamic ordering of vortex matter in amorphous MoGe films

N. Kokubo, S. Okayasu, K. Kadowaki
AIP Conference Proceedings
850, 853-854
2006



69 国際会議プロシーディングス等

History dependent flow dynamics of vortex matter in mesoscopic channels

T. G. Sorop, N. Kokubo, R. Besseling, P. H. Kes
Physic C
437-438, 285- 288
2006



70 国際会議プロシーディングス等

Dynamical melting and mode locking of vortex matter in 2H-NbSe2 pure single crystals

N. Kokubo, K. Kadowaki, K. Takita
Physica C
437-438, 149- 152
2006



71 国際会議プロシーディングス等

Mode locking of vortex matter in the peak effect regime of amorphous MoGe films

N. Kokubo, K. Kadowaki and P. H. Kes
Physica C
445-448, 206-209
2006



72 国際会議プロシーディングス等

Vortex lattice dynamics in a-NbGe detected by mode-locking experiments

R. Besseling, N. Kokubo, O. Benningshof, P. H. Kes
Physica C
408-410, 581-582
2004



73 国際会議プロシーディングス等

Vortex matter driven through mesoscopic channels

P. H. Kes, N. Kokubo, R. Besseling
Physica C
408-410,, 478-481
2004



74 国際会議プロシーディングス等

Dynamical fluctuations in mode locking experiments on vortices moving through mesoscopic channels

N. Kokubo, R. Besseling, P. H. Kes
Physica C
408-410, 573-574
2004



75 国際会議プロシーディングス等

Effect of history on the confined width of vortices in mesoscopic channels

N. Kokubo, R. Besseling, P. H. Kes
Physica C
412-414, 362-366
2004



76 国際会議プロシーディングス等

Mode-locking and dynamic melting of vortex matter driven through mesoscopic channels

R. Besseling, N. Kokubo, P. H. Kes
Journal de Physique, IV, France
12, 169-171
2002



77 国際会議プロシーディングス等

Current-Induced Voltage Noise at Zero Field in Thick and Thin Films of a-MoSi

S. Okuma, M. Kamada, N. Kokubo
Physica C
357, 560-536
2001



78 国際会議プロシーディングス等

Vortex dynamics below the Kosterlitz-Thouless transition detected by voltage noise

S. Okuma, N. Kokubo, M. Kamada
Advances in Superconductivity (Springer-Verlag, Tokyo)
XII/ 1, 296-298
2000



79 国際会議プロシーディングス等

Current-induced voltage noise below the Kosterlitz-Thouless transition

N. Kokubo, M. Mutou, M. Kamada, S. Okuma
Physica B
284-288, 981-982
2000



80 国際会議プロシーディングス等

Vortex dynamics in the mixed state of amorphous MoxSi1-x films

N. Kokubo, S. Okuma
Physica B
284-288, 865-866
2000



81 国際会議プロシーディングス等

Vortex phase diagram of disordered films of granular In and amorphous MoxSi1-x

S. Okuma, M. Arai, N. Kokubo
Physica B
284-288, 640-641
2000



82 国際会議プロシーディングス等

The thermally nucleated dissipation process in zero field studied by voltage noise

N. Kokubo, M. Muto, S. Okuma
Advances in Superconductivity (Springer-Verlag, Tokyo)
XI/ 1, 299-302
1999



83 国際会議プロシーディングス等

Dynamical properties of vortices in the mixed state of amorphous MoxSi1-x

N. Kokubo, S. Okuma
Advances in Superconductivity (Springer-Verlag, Tokyo)
XI/ 1, 295-298
1999



84 国際会議プロシーディングス等

The vortex-glass transition and phase diagram in low-TC superconductors

S. Okuma, M. Arai, N. Kokubo
Advances in Superconductivity (Springer-Verlag, Tokyo)
XI/ 1, 203-206
1999



85 国際会議プロシーディングス等

The T=0 phase diagram of the field-driven superconductor-insulator transition in 2D

S. Okuma, S. Shinozaki, N. Kokubo
Advances in Superconductivity (Springer-Verlag, Tokyo)
XI/ 1, 185-188
1999



86 国際会議プロシーディングス等

Superconductor-insulator transition in two-dimensional a-MoxSi1-x films

S. Okuma, T. Terashima, N. Kokubo
Advances in Superconductivity (Springer-Verlag, Tokyo)
X/ 1, 163-166
1998



87 国際会議プロシーディングス等

Hall effect in the mixed state of In film

S. Okuma, N. Kokubo
Advances in Superconductivity (Springer-Verlag, Tokyo)
X/ 1, 93-96
1998



88 国際会議プロシーディングス等

Voltage noise measurements in dirty superconducting films

N. Kokubo, T. Terashima, S. Okuma
Advances in Superconductivity (Springer-Verlag, Tokyo)
X/ 1, 79-82
1998



89 国際会議プロシーディングス等

Frequency dependence of the complex resistivity in the vortex state

S. Okuma, T. Ito, N. Kokubo
Advances in Superconductivity (Springer-Verlag, Tokyo)
X/ 1, 75-78
1998



90 国際会議プロシーディングス等

Ac magnetic and mechanical response at the onset of superconductivity in magnetic fields

S. Okuma, H. Yoshida, T. Ito, N. Kokubo
Advances in Superconductivity (Springer-Verlag, Tokyo)
IX/ 1, 199-202
1997



91 国際会議プロシーディングス等

Critical scaling behavior in the ac impedance of indium films in magnetic fields

N. Kokubo, S. Okuma
Advances in Superconductivity (Springer-Verlag, Tokyo)
IX/ 1, 195-198
1997



92 国際会議プロシーディングス等

Superconductor-insulator transition in uniformly disordered two-dimensional films

S. Okuma, T. Terashima, N. Kokubo
Advances in Superconductivity (Springer-Verlag, Tokyo)
IX/ 1, 191-194
1997



93 国際会議プロシーディングス等

Thickness dependence of the I-V characteristics in indium films

S. Okuma, K. Enya, H. Hirai, N. Kokubo, T. Arai
Advances in Superconductivity (Springer-Verlag, Tokyo)
VII/ 1, 121-124
1995



94 国際会議プロシーディングス等

Distinct insulating phase at low temperature in thin superconducting films

S. Okuma, N. Kokubo
Advances in Superconductivity (Springer-Verlag, Tokyo)
VII/ 1, 117-120
1995



95 国際会議プロシーディングス等

Scaling of the Hall resistance in the mixed state of indium films

S. Okuma, N. Kokubo
Advances in Superconductivity (Springer-Verlag, Tokyo)
VII/ 1, 113-116
1995



96 国際会議プロシーディングス等

Power-law behavior of I-V characteristics and magnetoresistance in thin indium films

S. Okuma, N. Kokubo, K. Enya
Advances in Superconductivity (Springer-Verlag, Tokyo)
VI/ 1, 119-122
1994



97 解説

幾何学的構造を持つ微小超伝導体に閉じ込めた量子渦配列

小久保伸人
固体物理
594/ 8, 437-446
2015/08



98 解説

超伝導渦の動的秩序化

大熊哲,井上甚,小久保伸人
固体物理
515, 1-15
2009



99 解説

極低温下水晶振動子法による膜厚・吸着原子の測定

大熊哲,小久保伸人
固体物理
32, 97-103
1997



100 解説

2次元超伝導体における磁場印加超伝導絶縁体転移

小久保伸人
物性研究出版
64/ 3, 282-307
1995