Enhancement of spin–flop-induced magnetic hysteresis in van der Waals magnet (Fe_1−xCo_x)₅GeTe₂

Tomoharu Ohta, Nan Jiang, Kohei Yamagami, Yoshinori Okada, Yasuhiro Niimi

Applied Physics Letters　Vol. 122　No. 15　p. 152402-152402　2023/04/10　Research paper (scientific journal)

Microwave Dynamical Conductivity in the Quantum Hall Regime

Tomonori Arakawa, Takashi Oka, Seitaro Kon, Yasuhiro Niimi

Physical Review Letters　Vol. 129　No. 4　p. 046801-046801　2022/07/20　Research paper (scientific journal)

Higher harmonic resistance oscillations in micro-bridge superconducting Nb ring

Masashi Tokuda, Ryoya Nakamura, Masaki Maeda, Yasuhiro Niimi

Japanese Journal of Applied Physics　Vol. 61　No. 6　p. 060908-060908　2022/06/01　Research paper (scientific journal)

Thickness-induced crossover from strong to weak collective pinning in exfoliated FeTe0.6Se0.4 thin films at 1 T

Ryoya Nakamura, Masashi Tokuda, Mori Watanabe, Masamichi Nakajima, Kensuke Kobayashi, Yasuhiro Niimi

Physical Review B　Vol. 104　No. 16　p. 165412-165412　2021/10/14　Research paper (scientific journal)

Charge density wave transitions in mechanically-exfoliated NbSe3 devices

Koji Fujiwara, Shuichi Iwakiri, Mori Watanabe, Ryoya Nakamura, Masahiko Yokoi, Kensuke Kobayashi, Yasuhiro Niimi

Japanese Journal of Applied Physics　Vol. 60　No. 7　p. 070904-070904　2021/07/01　Research paper (scientific journal)

Negative correlation between the linear and the nonlinear conductance in magnetic tunnel junctions

Shuichi Iwakiri, Satoshi Sugimoto, Yasuhiro Niimi, Yusuke Kozuka, Yukiko K. Takahashi, Shinya Kasai, Kensuke Kobayashi

Physical Review B　Vol. 103　No. 24　p. 245427-245427　2021/06/21　Research paper (scientific journal)

Itinerant ferromagnetism mediated by giant spin polarization of the metallic ligand band in the van der Waals magnet Fe5GeTe2

K. Yamagami, Y. Fujisawa, B. Driesen, C. H. Hsu, K. Kawaguchi, H. Tanaka, T. Kondo, Y. Zhang, H. Wadati, K. Araki, T. Takeda, Y. Takeda, T. Muro, F. C. Chuang, Y. Niimi, K. Kuroda, M. Kobayashi, Y. Okada

Physical Review B　Vol. 103　No. 6　p. L060403-L060403　2021/02/12　Research paper (scientific journal)

Butterfly-shaped magnetoresistance in van der Waals ferromagnet Fe5GeTe2

T. Ohta, M. Tokuda, S. Iwakiri, K. Sakai, B. Driesen, Y. Okada, K. Kobayashi, Y. Niimi

AIP Advances　Vol. 11　No. 2　p. 025014-025014　2021/02/08　Research paper (scientific journal)

Shubnikov-de-Haas oscillation and possible modification of effective mass in CeTe3 thin films

Mori Watanabe, Ryoya Nakamura, Sanghyun Lee, Takuya Asano, Takashi Ibe, Masashi Tokuda, Hiroki Taniguchi, Daichi Ueta, Yoshinori Okada, Kensuke Kobayashi, Yasuhiro Niimi

AIP Advances　Vol. 11　No. 1　p. 015005-015005　2021/01/05　Research paper (scientific journal)

Spin treacle in a frustrated magnet observed with spin current

Hiroki Taniguchi, Mori Watanabe, Takashi Ibe, Masashi Tokuda, Tomonori Arakawa, Toshifumi Taniguchi, Bo Gu, Timothy Ziman, Sadamichi Maekawa, Kensuke Kobayashi, Yasuhiro Niimi

Physical Review B　Vol. 102　No. 9　p. 094405-094405　2020/09/03　Research paper (scientific journal)

Quantum oscillations with magnetic hysteresis observed in CeTe3 thin films

Mori Watanabe, Sanghyun Lee, Takuya Asano, Takashi Ibe, Masashi Tokuda, Hiroki Taniguchi, Daichi Ueta, Yoshinori Okada, Kensuke Kobayashi, Yasuhiro Niimi

Applied Physics Letters　Vol. 117　No. 7　p. 072403-072403　2020/08/17　Research paper (scientific journal)

Negative resistance state in superconducting NbSe2 induced by surface acoustic waves

Masahiko Yokoi, Satoshi Fujiwara, Tomoya Kawamura, Tomonori Arakawa, Kazushi Aoyama, Hiroshi Fukuyama, Kensuke Kobayashi, Yasuhiro Niimi

Science Advances　Vol. 6　No. 34　p. eaba1377-eaba1377　2020/08　Research paper (scientific journal)

Etching process of narrow wire and application to tunable-barrier electron pump

Shota Norimoto, Shuichi Iwakiri, Masahiko Yokoi, Tomonori Arakawa, Yasuhiro Niimi, Kensuke Kobayashi

Review of Scientific Instruments　Vol. 91　No. 8　p. 085110-085110　2020/08/01　Research paper (scientific journal)

Tunneling mechanism in a (Ga,Mn)As/GaAs-based spin Esaki diode investigated by bias-dependent shot noise measurements

T. Arakawa, J. Shiogai, M. Maeda, M. Ciorga, M. Utz, D. Schuh, Y. Niimi, M. Kohda, J. Nitta, D. Bougeard, D. Weiss, K. Kobayashi

Physical Review B　Vol. 102　No. 4　p. 045308-045308　2020/07/23　Research paper (scientific journal)

Generation of multipeak spectrum of spin torque oscillator in non-linear regime

Shuichi Iwakiri, Satoshi Sugimoto, Yasuhiro Niimi, Kensuke Kobayashi, Yusuke Kozuka, Yukiko K. Takahashi, Shinya Kasai

Applied Physics Letters　Vol. 117　No. 2　p. 022406-022406　2020/07/13　Research paper (scientific journal)

Multiple modes of a single spin torque oscillator under the non-linear region

Satoshi Sugimoto, Shuichi Iwakiri, Yusuke Kozuka, Yukiko Takahashi, Yasuhiro Niimi, Kensuke Kobayashi, Shinya Kasai

AIP Advances　Vol. 10　No. 7　p. 075115-075115　2020/07/01　Research paper (scientific journal)

Enhancement of coercive field in atomically-thin quenched Fe5GeTe2

Tomoharu Ohta, Kosuke Sakai, Hiroki Taniguchi, Benjamin Driesen, Yoshinori Okada, Kensuke Kobayashi, Yasuhiro Niimi

Applied Physics Express　Vol. 13　No. 4　p. 043005-043005　2020/04/01　Research paper (scientific journal)

Butterfly-shaped magnetoresistance in triangular-lattice antiferromagnet Ag2CrO2

Hiroki Taniguchi, Mori Watanabe, Masashi Tokuda, Shota Suzuki, Eria Imada, Takashi Ibe, Tomonori Arakawa, Hiroyuki Yoshida, Hiroaki Ishizuka, Kensuke Kobayashi, Yasuhiro Niimi

Scientific Reports　Vol. 10　No. 1　p. 2525-2525　2020/02　Research paper (scientific journal)

Observation of the magnetization metastable state in a perpendicularly magnetized nanopillar with asymmetric potential landscape

Shuichi Iwakiri, Satoshi Sugimoto, Yasuhiro Niimi, Kensuke Kobayashi, Yukiko K. Takahashi, Shinya Kasai

Applied Physics Letters　Vol. 115　No. 9　p. 092407-092407　2019/08/26　Research paper (scientific journal)

Cavity resonator for circularly polarized microwave irradiation mounted on a cryostat

T. Arakawa, S. Norimoto, S. Iwakiri, T. Asano, Y. Niimi

Review of Scientific Instruments　Vol. 90　No. 8　p. 084707-084707　2019/08　Research paper (scientific journal)

Spin transport measurements in metallic Bi/Ni nanowires

Masashi Tokuda, Natsuki Kabeya, Komei Iwashita, Hiroki Taniguchi, Tomonori Arakawa, Di Yue, Xinxin Gong, Xiaofeng Jin, Kensuke Kobayashi, Yasuhiro Niimi

Applied Physics Express　Vol. 12　No. 5　p. 053005-053005　2019/05/01　Research paper (scientific journal)

Relation between spin Hall effect and anomalous Hall effect in 3d ferromagnetic metals

Yasutomo Omori, Edurne Sagasta, Yasuhiro Niimi, Martin Gradhand, Luis E. Hueso, Fèlix Casanova, YoshiChika Otani

Physical Review B　Vol. 99　No. 1　p. 014403-014403　2019/01/03　Research paper (scientific journal)

Electrical contacts to thin layers of Bi2Sr2CaCu2O8+δ

Shota Suzuki, Hiroki Taniguchi, Tsukasa Kawakami, Maxen Cosset-Cheneau, Tomonori Arakawa, Shigeki Miyasaka, Setsuko Tajima, Yasuhiro Niimi, Kensuke Kobayashi

Applied Physics Express　Vol. 11　No. 5　p. 053201-053201　2018/05/01　Research paper (scientific journal)

Fabrication of thin films of two-dimensional triangular antiferromagnet Ag2CrO2 and their transport properties

Hiroki Taniguchi, Shota Suzuki, Tomonori Arakawa, Hiroyuki Yoshida, Yasuhiro Niimi, Kensuke Kobayashi

AIP Advances　Vol. 8　No. 2　p. 025010-025010　2018/02　Research paper (scientific journal)

Large room temperature spin-to-charge conversion signals in a few-layer graphene/Pt lateral heterostructure

Wenjing Yan, Edurne Sagasta, Mario Ribeiro, Yasuhiro Niimi, Luis E. Hueso, Felix Casanova

NATURE COMMUNICATIONS　Vol. 8　p. 661-661　2017/09　Research paper (scientific journal)

Dynamics of pure spin current in high-frequency quantum regime

Shuichi Iwakiri, Yasuhiro Niimi, Kensuke Kobayashi

APPLIED PHYSICS EXPRESS　Vol. 10　No. 5　p. 053001-053001　2017/05　Research paper (scientific journal)

Effect of Magnetic Fluctuations on Spin Current

Yasuhiro Niimi, Dahai Wei, YoshiChika Otani

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　Vol. 86　No. 1　p. 011004-011004　2017/01　Research paper (scientific journal)

Tuning the spin Hall effect of Pt from the moderately dirty to the superclean regime

Edurne Sagasta, Yasutomo Omori, Miren Isasa, Martin Gradhand, Luis E. Hueso, Yasuhiro Niimi, YoshiChika Otani, Felix Casanova

PHYSICAL REVIEW B　Vol. 94　No. 6　p. 060412(R)-060412(R)　2016/08　Research paper (scientific journal)

Spin mixing conductance in Cu-Ir dilute alloys

Sei Takizawa, Motoi Kimata, Yasutomo Omori, Yasuhiro Niimi, YoshiChika Otani

APPLIED PHYSICS EXPRESS　Vol. 9　No. 6　p. 063009-063009　2016/06　Research paper (scientific journal)

Influence of inverse spin Hall effect in spin-torque ferromagnetic resonance measurements

Kouta Kondou, Hiroaki Sukegawa, Shinya Kasai, Seiji Mitani, Yasuhiro Niimi, YoshiChika Otani

APPLIED PHYSICS EXPRESS　Vol. 9　No. 2　p. 023002-023002　2016/02　Research paper (scientific journal)

Reciprocal spin Hall effects in conductors with strong spin-orbit coupling: a review

Yasuhiro Niimi, YoshiChika Otani

REPORTS ON PROGRESS IN PHYSICS　Vol. 78　No. 12　p. 124501-124501　2015/12

Strong Suppression of the Spin Hall Effect in the Spin Glass State

Y. Niimi, M. Kimata, Y. Omori, B. Gu, T. Ziman, S. Maekawa, A. Fert, Y. Otani

PHYSICAL REVIEW LETTERS　Vol. 115　No. 19　p. 196602-196602　2015/11　Research paper (scientific journal)

Quasiparticle-mediated spin Hall effect in a superconductor

T. Wakamura, H. Akaike, Y. Omori, Y. Niimi, S. Takahashi, A. Fujimaki, S. Maekawa, Y. Otani

NATURE MATERIALS　Vol. 14　No. 7　p. 675-678　2015/07　Research paper (scientific journal)

Spin relaxation mechanism in a highly doped organic polymer film

Motoi Kimata, Daisuke Nozaki, Yasuhiro Niimi, Hiroyuki Tajima, YoshiChika Otani

PHYSICAL REVIEW B　Vol. 91　No. 22　p. 224422-224422　2015/06　Research paper (scientific journal)

Selective mode excitation in three-chained magnetic vortices

Norinobu Hasegawa, Satoshi Sugimoto, Hiroaki Fujimori, Kouta Kondou, Yasuhiro Niimi, YoshiChika Otani

APPLIED PHYSICS EXPRESS　Vol. 8　No. 6　p. 063005-063005　2015/06　Research paper (scientific journal)

Inverse spin Hall effect in a closed loop circuit

Y. Omori, F. Auvray, T. Wakamura, Y. Niimi, A. Fert, Y. Otani

APPLIED PHYSICS LETTERS　Vol. 104　No. 24　p. 242415-242415　2014/06　Research paper (scientific journal)

Detection of a symmetric circular gyration of the vortex core via the second order harmonic magnetoresistance oscillation (vol 7, 023006, 2014)

Satoshi Sugimoto, Norinobu Hasegawa, Yasuhiro Niimi, Yasuhiro Fukuma, Shinya Kasai, YoshiChika Otani

APPLIED PHYSICS EXPRESS　Vol. 7　No. 3　p. 039202-039202　2014/03

Thickness dependence of spin torque ferromagnetic resonance in Co75Fe25/Pt bilayer films

A. Ganguly, K. Kondou, H. Sukegawa, S. Mitani, S. Kasai, Y. Niimi, Y. Otani, A. Barman

APPLIED PHYSICS LETTERS　Vol. 104　No. 7　p. 072405-072405　2014/02　Research paper (scientific journal)

Extrinsic spin Hall effects measured with lateral spin valve structures

Y. Niimi, H. Suzuki, Y. Kawanishi, Y. Omori, T. Valet, A. Fert, Y. Otani

PHYSICAL REVIEW B　Vol. 89　No. 5　p. 054401-054401　2014/02　Research paper (scientific journal)

Detection of a symmetric circular gyration of the vortex core via the second-order harmonic magnetoresistance oscillation

Satoshi Sugimoto, Norinobu Hasegawa, Yasuhiro Niimi, Yasuhiro Fukuma, Shinya Kasai, YoshiChika Otani

APPLIED PHYSICS EXPRESS　Vol. 7　No. 2　p. 023006-023006　2014/02　Research paper (scientific journal)

Spin Injection into a Superconductor with Strong Spin-Orbit Coupling

T. Wakamura, N. Hasegawa, K. Ohnishi, Y. Niimi, YoshiChika Otani

PHYSICAL REVIEW LETTERS　Vol. 112　No. 3　p. 036602-036602　2014/01　Research paper (scientific journal)

5d iridium oxide as a material for spin-current detection

Kohei Fujiwara, Yasuhiro Fukuma, Jobu Matsuno, Hiroshi Idzuchi, Yasuhiro Niimi, YoshiChika Otani, Hidenori Takagi

NATURE COMMUNICATIONS　Vol. 4　p. 2893-2893　2013/12　Research paper (scientific journal)

Experimental verification of comparability between spin-orbit and spin-diffusion lengths

Yasuhiro Niimi, Dahai Wei, Hiroshi Idzuchi, Taro Wakamura, Takeo Kato, Yoshichika Otani

Physical Review Letters　Vol. 110　No. 1　p. 016805-016805　2013/01/03　Research paper (scientific journal)

Giant Spin Hall Effect Induced by Skew Scattering from Bismuth Impurities inside Thin Film CuBi Alloys

Y. Niimi, Y. Kawanishi, D. H. Wei, C. Deranlot, H. X. Yang, M. Chshiev, T. Valet, A. Fert, Y. Otani

PHYSICAL REVIEW LETTERS　Vol. 109　No. 15　p. 156602-156602　2012/10　Research paper (scientific journal)

The spin Hall effect as a probe of nonlinear spin fluctuations

D. H. Wei, Y. Niimi, B. Gu, T. Ziman, S. Maekawa, Y. Otani

NATURE COMMUNICATIONS　Vol. 3　p. 1058-1058　2012/09　Research paper (scientific journal)

Generation of Large Spin Accumulation in S/N/S Josephson Junctions

Taro Wakamura, Kohei Ohnishi, Yasuhiro Niimi, YoshiChika Otani

26TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT26), PTS 1-5　Vol. 400　p. 022130-022130　2012　Research paper (international conference proceedings)

Large Spin Accumulation with Long Spin Diffusion Length in Cu/MgO/Permalloy Lateral Spin Valves

Taro Wakamura, Kohei Ohnishi, Yasuhiro Niimi, YoshiChika Otani

APPLIED PHYSICS EXPRESS　Vol. 4　No. 6　p. 063002-063002　2011/06　Research paper (scientific journal)

Indication of intrinsic spin Hall effect in 4d and 5d transition metals

M. Morota, Y. Niimi, K. Ohnishi, D. H. Wei, T. Tanaka, H. Kontani, T. Kimura, Y. Otani

PHYSICAL REVIEW B　Vol. 83　No. 17　p. 174405-174405　2011/05　Research paper (scientific journal)

Extrinsic Spin Hall Effect Induced by Iridium Impurities in Copper

Y. Niimi, M. Morota, D. H. Wei, C. Deranlot, M. Basletic, A. Hamzic, A. Fert, Y. Otani

PHYSICAL REVIEW LETTERS　Vol. 106　No. 12　p. 126601-126601　2011/03　Research paper (scientific journal)

Quantum coherence at low temperatures in mesoscopic systems: Effect of disorder

Yasuhiro Niimi, Yannick Baines, Thibaut Capron, Dominique Mailly, Fang-Yuh Lo, Andreas D. Wieck, Tristan Meunier, Laurent Saminadayar, Christopher Baeuerle

PHYSICAL REVIEW B　Vol. 81　No. 24　p. 245306-245306　2010/06　Research paper (scientific journal)

Effect of Disorder on the Quantum Coherence in Mesoscopic Wires

Y. Niimi, Y. Baines, T. Capron, D. Mailly, F. -Y. Lo, A. D. Wieck, T. Meunier, L. Saminadayar, C. Baeuerle

PHYSICAL REVIEW LETTERS　Vol. 102　No. 22　p. 226801-226801　2009/06　Research paper (scientific journal)

Localized Distributions of Quasi-Two-Dimensional Electronic States near Defects Artificially Created at Graphite Surfaces in Magnetic Fields

Y. Niimi, H. Kambara, Hiroshi Fukuyama

PHYSICAL REVIEW LETTERS　Vol. 102　No. 2　p. 026803-026803　2009/01　Research paper (scientific journal)

STM/STS measurements of quasi two-dimensional electronic states near artificially created defects in magnetic fields

Y. Niimi, H. Kambara, Hiroshi Fukuyama

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES　Vol. 40　No. 5　p. 1298-1300　2008/03　Research paper (scientific journal)

Low-temperature dephasing in irradiated metallic wires

Thibaut Capron, Yasuhiro Niimi, Francois Mallet, Yannick Baines, Dominique Mailly, Fang-Yuh Lo, Alexander Melnikov, Andreas D. Wieck, Laurent Saminadayar, Christopher Baeuerle

PHYSICAL REVIEW B　Vol. 77　No. 3　p. 033102-033102　2008/01　Research paper (scientific journal)

Temperature dependence of the impurity-induced resonant state in Zn-doped Bi2Sr2CaCu2O8+delta by scanning tunneling spectroscopy

H. Kambara, Y. Niimi, M. Ishikado, S. Uchida, Hiroshi Fukuyama

PHYSICAL REVIEW B　Vol. 76　No. 5　p. 052506-052506　2007/08　Research paper (scientific journal)

Construction of a versatile ultralow temperature scanning tunneling microscope

H. Kambara, T. Matsui, Y. Niimi, Hiroshi Fukuyama

REVIEW OF SCIENTIFIC INSTRUMENTS　Vol. 78　No. 7　p. 073703-073703　2007/07　Research paper (scientific journal)

STM/STS Measurements of Two-Dimensional Electronic States in Magnetic Fields at Epitaxially Grown InAs(111) A Surfaces

Y. Niimi, K. Kanisawa, H. Kojima, H. Kambara, Y. Hirayama, S. Tarucha, Hiroshi Fukuyama

PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON NANOSCIENCE AND TECHNOLOGY　Vol. 61　p. 874-878　2007　Research paper (international conference proceedings)

Real-space imaging of alternate localization and extension of quasi-two-dimensional electronic states at graphite surfaces in magnetic fields

Y. Niimi, H. Kambara, T. Matsui, D. Yoshioka, Hiroshi Fukuyama

PHYSICAL REVIEW LETTERS　Vol. 97　No. 23　p. 236804-236804　2006/12　Research paper (scientific journal)

STM/STS measurements of two-dimensional electronic states trapped around surface defects in magnetic fields

Y. Niimi, T. Matsui, H. Kambara, Hiroshi Fukuyama

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES　Vol. 34　No. 1-2　p. 100-103　2006/08　Research paper (scientific journal)

Construction of a dilution refrigerator based ultra-low temperature scanning tunneling microscope

H Kambara, T Matsui, Y Niimi, H Fukuyama

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS　Vol. 45　No. 3B　p. 1909-1912　2006/03　Research paper (scientific journal)

Scanning tunneling microscopy and spectroscopy of the electronic local density of states of graphite surfaces near monoatomic step edges

Y Niimi, T Matsui, H Kambara, K Tagami, M Tsukada, H Fukuyama

PHYSICAL REVIEW B　Vol. 73　No. 8　p. 085421-085421　2006/02　Research paper (scientific journal)

Scanning tunneling-microscopy and spectroscopy of Sr2RuO4

H. Kambara, Y. Niimi, K. Takizawa, H. Yaguchi, Y. Maeno, Hiroshi Fukuyama

LOW TEMPERATURE PHYSICS, PTS A AND B　Vol. 850　p. 539-+　2006　Research paper (international conference proceedings)

Development of an ultra-low temperature scanning tunneling microscope and applications for low temperature physics

H Kambara, T Matsui, Y Niimi, H Fukuyama

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS　Vol. 66　No. 8-9　p. 1552-1555　2005/08　Research paper (scientific journal)

STS observations of landau levels at graphite surfaces

T Matsui, H Kambara, Y Niimi, K Tagami, M Tsukada, H Fukuyama

PHYSICAL REVIEW LETTERS　Vol. 94　No. 22　p. 226403-226403　2005/06　Research paper (scientific journal)

Scanning tunneling microscopy and spectroscopy studies of graphite edges

Y Niimi, T Matsui, H Kambara, K Tagami, M Tsukada, H Fukuyama

APPLIED SURFACE SCIENCE　Vol. 241　No. 1-2　p. 43-48　2005/02　Research paper (scientific journal)

Photoemission study of poly(dA)-poly(dT) DNA: Experimental and theoretical approach to the electronic density of states

H Wadati, K Okazaki, Y Niimi, A Fujimori, H Tabata, J Pikus, JP Lewis

APPLIED PHYSICS LETTERS　Vol. 86　No. 2　p. 023901-023901　2005/01　Research paper (scientific journal)

Characterization of ZYX exfoliated graphite for studies of monolayer He-3 below 1 mK

Y Niimi, S Murakawa, Y Matsumoto, H Kambara, H Fukuyama

REVIEW OF SCIENTIFIC INSTRUMENTS　Vol. 74　No. 10　p. 4448-4452　2003/10　Research paper (scientific journal)

Characterization of ZYX graphite for studies of two-dimensional He-3 at ultra-low temperatures

S Murakawa, Y Niimi, Y Matsumoto, C Bauerle, H Fukuyama

PHYSICA B-CONDENSED MATTER　Vol. 329　p. 144-145　2003/05　Research paper (scientific journal)