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paper 2024
70). Magnetotransport properties in van der Waals RTe3 (R = La, Ce, Tb) Y. Niimi ,109 , 134404 (2024). Selected as Editors’ suggestion.
paper 2023
69). Fabrication of Se-doped PtBi2 Thin Film Devices Y. Niimi* ,38 , 011036 (2023).
68). Enhancement of spin–flop-induced magnetic hysteresis in van der Waals magnet (Fe1-x Cox )5 GeTe2 Y. Niimi* ,122 , 152402 (2023). Selected as Featured article.
paper 2022
67). Microwave Dynamical Conductivity in the Quantum Hall Regime Y. Niimi ,129 , 046801 (2022).
66). Higher harmonic resistance oscillations in micro-bridge superconducting Nb ring Y. Niimi* ,61 , 060908 (2022).
paper 2021
65). Thickness-induced crossover from strong to weak collective pinning in exfoliated FeTe0.6 Se0.4 thin films at 1 T Y. Niimi* ,104 , 165412 (2021).
64). Negative correlation between the linear and the nonlinear conductance in magnetic tunnel junctions Y. Niimi , Y. Kozuka, Y. K. Takahashi, S. Kasai, and K. Kobayashi,103 , 245427 (2021).
63). Charge density wave transitions in mechanically-exfoliated NbSe3 devices Y. Niimi* ,60 , 070904 (2021).
62). Itinerant ferromagnetism mediated by giant spin polarization of the metallic ligand band in the van der Waals magnet Fe5 GeTe2 Y. Niimi , K. Kuroda, M. Kobayashi, and Y. Okada,103 , L060403 (2021).
61). Butterfly-shaped magnetoresistance in van der Waals ferromagnet Fe5 GeTe2 Y. Niimi* ,11 , 025014 (2021). Selected as Featured article.
60). Shubnikov-de-Haas oscillation and possible modification of effective mass in CeTe3 thin films Y. Niimi* ,11 , 015005 (2021).
paper 2020
59). Spin treacle in a frustrated magnet observed with spin current Y. Niimi* ,102 , 094405 (2020).
58). Negative resistance state in superconducting NbSe2 induced by surface acoustic waves Y. Niimi* ,6 , eaba1377 (2020).
57). Quantum oscillations with magnetic hysteresis observed in CeTe3 thin films Y. Niimi* ,117 , 072403 (2020).
56). Etching process of narrow wire and application to tunable-barrier electron pump Y. Niimi , and K. Kobayashi,91 , 085110 (2020).
55). Tunneling mechanism in a (Ga,Mn)As/GaAs-based spin Esaki diode investigated by bias-dependent shot noise measurements Y. Niimi , M. Kohda, J. Nitta, D. Bougeard, D. Weiss, and K. Kobayashi,102 , 045308 (2020).
54). Multiple modes of a single spin torque oscillator under the non-linear region Y. Niimi , K. Kobayashi, and S. Kasai,10 , 075115 (2020).
53). Generation of multipeak spectrum of spin torque oscillator in non-linear regime Y. Niimi , K. Kobayashi, Y. Kozuka, Y. K. Takahashi, and S. Kasai,117 , 022406 (2020).
52). Enhancement of coercive field in atomically-thin quenched Fe5 GeTe2 Y. Niimi* ,13 , 043005 (2020).
51). Butterfly-shaped magnetoresistance in triangular-lattice antiferromagnet Ag2 CrO2 Y. Niimi* ,10 , 2525 (2020).
paper 2019
50). Observation of the magnetization metastable state in a perpendicularly magnetized nanopillar with asymmetric potential landscape Y. Niimi , K. Kobayashi, Y. K. Takahashi, and S. Kasai*,115 , 092407 (2019).
49). Cavity resonator for circularly polarized microwave irradiation mounted on a cryostat Y. Niimi ,90 , 084707 (2019).
48). Spin transport measurements in metallic Bi/Ni nanowires Y. Niimi* ,12 , 053005 (2019).
47). Relation between spin Hall effect and anomalous Hall effect in 3d ferromagnetic metals Y. Niimi* , M. Gradhand, L. E. Hueso, F. Casanova, and Y. Otani*,99 , 014403 (2019).
paper 2018
46). Electrical contacts to thin layers of Bi2 Sr2 CaCu2 O8+δ Y. Niimi* , and K. Kobayashi,11 , 053201 (2018).
45). Fabrication of thin films of two-dimensional triangular antiferromagnet Ag2 CrO2 and their transport properties Y. Niimi* , and K. Kobayashi,8 , 025010 (2018).
paper 2017
44). Large room temperature spin-to-charge conversion signals in a few-layer graphene/Pt lateral heterostructure Y. Niimi , L. E. Hueso*, and F. Casanova*,8 , 661 (2017).
43). Dynamics of pure spin current in high-frequency quantum regime Y. Niimi , and K. Kobayashi,10 , 053001 (2017).
42). Effect of Magnetic Fluctuations on Spin Current Y. Niimi* , D. H. Wei, and Y. Otani,86 , 011004 (2017).
paper 2016
41). Tuning the spin Hall effect of Pt from the moderately dirty to the superclean regime Y. Niimi , and Y. Otani, and F. Casanova*,94 , 060412(R) (2016). Selected as Editors’ suggestion.
40). Spin mixing conductance in Cu-Ir dilute alloys Y. Niimi , and Y. Otani*,9 , 063009 (2016).
39). Influence of inverse spin Hall effect in spin-torque ferromagnetic resonance measurements Y. Niimi , and Y. Otani,9 , 023002 (2016).
paper 2015
38). 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, and Y. Otani,115 , 196602 (2015). See also Supplemental Material .
37). Reciprocal spin Hall effects in conductors with strong spin-orbit coupling: a review Y. Niimi* and Y. Otani*,78 , 124501 (2015).
36). Spin relaxation mechanism in a highly doped organic polymer film Y. Niimi , H. Tajima, and Y. Otani,91 , 224422 (2015).
35). Quasiparticle-mediated spin Hall effect in a superconductor Y. Niimi , S. Takahashi, A. Fujimaki, S. Maekawa, and Y. Otani*,14 , 675 (2015).
34). Selective mode excitation in three-chained magnetic vortices Y. Niimi , and Y. Otani,8 , 063005 (2015).
paper 2014
33). Inverse spin Hall effect in a closed loop circuit Y. Niimi* , A. Fert, and Y. Otani,104 , 242415 (2014).
32). Thickness dependence of spin torque ferromagnetic resonance in Co75 Fe25 /Pt bilayer films Y. Niimi , Y. Otani, and A. Barman*,104 , 072405 (2014).
31). Extrinsic spin Hall effects measured with lateral spin valve structures Y. Niimi* , H. Suzuki, Y. Kawanishi, Y. Omori, T. Valet, A. Fert, and Y. Otani,89 , 054401 (2014).
30). Spin Injection into Superconductor with Strong Spin-Orbit Coupling Y. Niimi , and Y. Otani*,112 , 036602 (2014). Selected as Editors’ suggestion.
29). Detection of a symmetric circular gyration of the vortex core via the second-order harmonic magnetoresistance oscillation Y. Niimi , Y. Fukuma, S. Kasai, and Y. Otani,7 , 023006 (2014). See also erratum .
paper 2013
28). 5d iridium oxide as a material for spin-current detection Y. Niimi , Y. Otani, and H. Takagi,4 , 2893 (2013).
27). Experimental Verification of Comparability between Spin-Orbit and Spin-Diffusion Lengths Y. Niimi* , D. H. Wei, H. Idzuchi, T. Wakamura, T. Kato, and Y. Otani,110 , 016805 (2013).
paper 2012
26). 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, and Y. Otani,109 , 156602 (2012). See also Supplemental Material .
25). The spin Hall effect as a probe of nonlinear spin fluctuations Y. Niimi* , B. Gu, T. Ziman, S. Maekawa, and Y. Otani,3 , 1058 (2012).
24). Perfect alloys for spin Hall current-induced magnetization switching Y. Niimi , L. Vila, and A. Fert,2 , 1250010 (2012).
23). Generation of Large Spin Accumulation in S/N/S Josephson Junctions Y. Niimi , and Y. Otani,400 , 022130 (2012).
paper 2011
22). Large Spin Accumulation with Long Spin Diffusion Length in Cu/MgO/Permalloy Lateral Spin Valves Y. Niimi* , and Y. Otani,4 , 063002 (2011).
21). Indication of intrinsic spin Hall effect in 4d and 5d transition metals Y. Niimi* , K. Ohnishi, D. H. Wei, T. Tanaka, H. Kontani, T. Kimura, and Y. Otani*,83 , 174405 (2011).
20). 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, and Y. Otani,106 , 126601 (2011). See also Supplemental Material .
paper 2010
19). Quantum coherence at low temperatures in mesoscopic systems: Effect of disorder Y. Niimi , Y. Baines, T. Capron, D. Mailly, F.-Y. Lo, A. D. Wieck, T. Meunier, L. Saminadayar*, and C. Bäuerle*,81 , 245306 (2010). Selected as Editors’ suggestion.
paper 2009
18). 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*, and C. Bäuerle*,102 , 226801 (2009). Selected as Editors’ suggestion.
17). Localized Distributions of Quasi Two-Dimensional Electronic States near Defects Artificially Created at Graphite Surfaces in Magnetic Fields Y. Niimi* , H. Kambara, and H. Fukuyama,102 , 026803 (2009).
paper 2008
16). Low temperature dephasing in irradiated metallic wires Y. Niimi , F. Mallet, Y. Baines, D. Mailly, F.-Y. Lo, A. Melnikov, A. D. Wieck, L. Saminadayar*, and C. Bäuerle*,77 , 033102 (2008).
15). STM/STS measurements of quasi two-dimensional electronic states near artificially created defects in magnetic fields Y. Niimi* , H. Kambara, and H. Fukuyama,40 , 1298 (2008).
paper 2007
14). 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, and H. Fukuyama,61 , 874 (2007).
13). Temperature dependence of the impurity-induced resonant state in Zn-doped Bi2 Sr2 CaCu2 O8+δ by scanning tunneling spectroscopy Y. Niimi , M. Ishikado, S. Uchida, and H. Fukuyama,76 , 052506 (2007).
12). Construction of a versatile ultralow temperature scanning tunneling microscope Y. Niimi , and H. Fukuyama,78 , 073703 (2007).
paper 2006
11). 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, and H. Fukuyama*,97 , 236804 (2006).
10). 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, and H. Fukuyama*,73 , 085421 (2006).
9). STM/STS measurements of two-dimensional electronic states trapped around surface defects in magnetic fields Y. Niimi , T. Matsui, H. Kambara, and H. Fukuyama*,34 , 100 (2006).
8). Construction of a dilution refrigerator based ultra-low temperature scanning tunneling microscope Y. Niimi , and H. Fukuyama,45 , 1909 (2006).
7). Scanning Tunneling Microscopy and Spectroscopy of Sr2 RuO4 Y. Niimi , K. Takizawa, H. Yaguchi, Y. Maeno, and H. Fukuyama,850 , 539 (2006).
paper 2005
6). Scanning tunneling microscopy and spectroscopy studies of graphite edges Y. Niimi , T. Matsui, H. Kambara, K. Tagami, M. Tsukada, and H. Fukuyama*,241 , 43 (2005).
5). STS Observations of Landau Levels at Graphite Surfaces Y. Niimi , K. Tagami, M. Tsukada, and H. Fukuyama*,94 , 226403 (2005).
4). Development of an ultra-low temperature scanning tunneling microscope and applications for low temperature physics Y. Niimi , and H. Fukuyama,66 , 1552 (2005).
3). Photoemission study of poly(dA)-poly(dT) DNA : Experimental and theoretical approach to the electronic density of states Y. Niimi , A. Fujimori, H. Tabata, J. Pikus, and J. P. Lewis,86 , 023901 (2005).
paper 2003
2). Characterization of ZYX exfoliated graphite for studies of monolayer 3 He below 1 mK Y. Niimi , S. Murakawa, Y. Matsumoto, H. Kambara, and H. Fukuyama*,74 , 4448 (2003).
1). Characterization of ZYX graphite for studies of two-dimensional 3 He at ultra-low temperatures Y. Niimi , Y. Matsumoto, C. Bäuerle, and H. Fukuyama*,329-333 , 144 (2003).
解説記事
5). 原子層デバイスの魅力 ～ナノスケール物理の舞台として～ 新見康洋 ，74 , 76 (2022).
4). 磁気ゆらぎの強い系でのスピン変換 新見康洋 ，34 , No. 1, 17 (2019).
3). Nonlocal spin valves in metallic nanostructures Y. Niimi , and H. Idzuchi,
2). 位相とスピンのコヒーレンスの精密測定 新見康洋 ，53 , 249 (2018).
1). スピン軌道相互作用の強い導体中のスピンホール効果 新見康洋 ，50 , 575 (2015).
