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Research Activities

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Publication

2016

T. Nomura, K. Ohnishi, and T. Kimura:
"Geometrical dependence of spin current absorption into a ferromagnetic nanodot."
J. Appl. Phys. 120, 142121 (2016).  [PDF]

T. Nomura, K. Ohnishi, and T. Kimura:
"Large spin current injection in nano-pillar-based lateral spin valve."
AIP Conf. Proc. 1763, 020011 (2016).  [PDF]

S. Hu, T. Nomura, G. Uematsu, N. Asam, and T. Kimura:
"First- and second-harmonic detection of spin accumulation in a multiterminal lateral spin valve under high-bias ac current."
Phys. Rev. B 94, 014416 (2016).  [PDF]

M. Kawakita, K. Okabe, and T. Kimura:
"Laterally configured resistive switching device based on transition-metal nano-gap electrode on Gd oxide."
Appl. Phys. Lett. 108, 023101 (2016).  [PDF]

X. Cui, S. Yakata, and T. Kimura:
"Directional dependence of vortex core resonance in a square-shaped ferromagnetic dot."
Physica E 75, 28-32 (2016).  [PDF]

2015

K. Yamanoi, Y. Yokotani, X. Cui, S. Yakata, and T. Kimura:
"Stability of standing spin wave in Permalloy thin film studied by anisotropic magnetoresistance effect."
J. Appl. Phys. 118, 233909 (2015).  [PDF]

K. Yamanoi, Y. Yokotani, and T. Kimura:
"Heat dissipation due to ferromagnetic resonance in a ferromagnetic metal monitored by electrical resistance measurement."
Appl. Phys. Lett. 107, 182410-1-4 (2015).  [PDF]

X. Cui, S. Hu, M. Hidegara, S. Yakata, and T. Kimura:
"Sensitive detection of vortex-core resonance using amplitude-modulated magnetic field."
Sci. Rep. 5, 17922 (2015).  [PDF]

X. Cui, S. Yakata, and T. Kimura:
"Detection of vortex core oscillation using 2nd harmonic voltage detection technique."
IEEE Trans. Magn. 15, 0018-9464 (2015).  [PDF]

A. Pfeiffer, S. Hu, R. M. Reeve, A. Kronenberg, M. Jourdan, T. Kimura, and M. Klaui:
"Spin currents injected electrically and thermally from high spin polarized Co2MnSi."
Appl. Phys. Lett. 107, 82401 (2015).  [PDF]

K. Ienaga, H. Takata Y. Onishi, Y. Inagaki, H. Tsujii, T. Kimura, and T. Kawae:
"Spectroscopic study of low-temperature hydrogen absorption in palladium."
Appl. Phys. Lett. 106, 021605-1-4 (2015).  [PDF]

2014

S. Honda, and T. Kimura:
"Magnetization reversal of permalloy film by pure spin current injection: relation between reversal time and injected surface."
JPS Conf. Proc. 5, 011017 (2014).  [PDF]

S. Hu, and T. Kimura:
"Significant modulation of electrical spin accumulation by efficient thermal spin injection."
Phys. Rev. B 90, 134412 (2014).  [PDF]

T. Kimura:
"Lateral Spin Transport (Diffusive Spin Current)."
Handbook of Spintronics, (2014).  [PDF]

Y. Kanda, T. Nomura, T. Kimura, and M. Hara:
"Geometrical optimization of a local ballistic magnetic sensor."
Appl. Phys. Lett. 104, 142408 (2014).  [PDF]

S. Hu, H. Itoh, and T. Kimura:
"Efficient thermal spin injection using CoFeAl nanowire."
NPG Asia Mater. 6, e127 (2014).  [PDF]

K. Ohnishi, Y. Ono, T. Nomura, and T. Kimura:
"Significant change of spin transport property in Cu/Nb bilayer due to superconducting transition."
Sci. Rep. 4, 6260 (2014).  [PDF]

X. Cui, S. Hu, and T. Kimura:
"Detection of a vortex nucleation position in a circular ferromagnet using asymmetrically configured electrodes."
Appl. Phys. Lett. 105, 082403 (2014).  [PDF]

2013

S. Yakata, T. Tanaka, K. Kiseki, K. Matsuyama, and T. Kimura:
"Wide range tuning of resonant frequency for a vortex core in a regular triangle magnet."
Sci. Rep. 3, 3567 (2013).  [PDF]

S. R. Bakaul, S. Hu, and T. Kimura:
"Thermal gradient driven enhancement of pure spin current at room temperature in nonlocal spin transport devices."
Phys. Rev. B 88, 184407 (2013).  [PDF]

C. Mu, S. Hu, J. Wang, and T. Kimura:
"Thermo-electric effect in a nano-sized crossed Permalloy/Cu junction under high bias current."
Appl. Phys. Lett. 103, 132408(2013).  [PDF]

K. Yamanoi, T. Manago, S. Yakata, and T. Kimura:
"Measurement of the ferromagnetic resonance of a single micron dot by using a vector network analyzer."
J. Korean Phys. Soc. 63, 800 (2013).

K. Yamanoi, S. Yakata, T. Kimura and T. Manago:
"Spin Wave Excitation and Propagation Properties in a Permalloy Film."
Jpn. J. Appl. Phys. 52, 083001 (2013).  [PDF]

T. Matsunaga, K. Furukawa, Y. Kanda, M. Hara, T. Nomura, and T. Kimura:
"Detection of edge magnetic state by a ballistic bend resistance measurement."
Appl. Phys. Lett. 102, 252405(2013).  [PDF]

T. Manago, K. Yamanoi, S. Yakata, and T. Kimura:
"Size Dependence of Ferromagnetic Resonance Frequency in Submicron Patterned Magnet."
Jpn. J. Appl. Phys. 52, 053001 (2013).  [PDF]


Presentation

2016

K. Ohnishi, Y. Ono, M. Ishitaki, and T. Kimura:
"Phase modulation of supercurrent in the multi-layer-based lateral Josephson junction."
9th International Conference on Physics and Applications of Spin-Related Phenomena in Solids (PASPS9), Kobe, JAPAN (October 2016).

T. Kimura:
"Efficient Thermal Spin Injection and Its Application."
International Union of Materials Research Societies-International Conference on Electronic Materials (IUMRS-ICEM) 2016, Suntec, SINGAPORE (July 2016).

K. Yamanoi, K. Okade, and T. Kimura:
"Correlation between FMR heating and damping constant in amorphous magnetic thin films."
International Union of Materials Research Societies-International Conference on Electronic Materials (IUMRS-ICEM) 2016, Suntec, SINGAPORE (July 2016).

N. Asam, S. Hu, and T. Kimura:
"Field-like spin torque in CoFeAl/Cu/NiFe trilayers under ferromagnetic resonance."
9th International Symposium on Metallic Multilayers, Uppsala, SWEDEN (June 2016).

K. Yamanoi, Y. Nakano, and T. Kimura:
"Contribution of thermal spin injection in dynamical spin injection in FM/NM bilayer system."
9th International Symposium on Metallic Multilayers, Uppsala, SWEDEN (June 2016).

T. Nomura, S. Hu, G. Uematsu, and T. Kimura:
"Indirect detection of magnetization direction using thermal spin injection."
9th International Symposium on Metallic Multilayers, Uppsala, SWEDEN (June 2016).

Y. Nakano, K. Okabe, M. Kawakita, K. Yamanoi, and T. Kimura:
"Modulation of exchange anisotropy due to pure spin current injection into antiferromagnet."
9th International Symposium on Metallic Multilayers, Uppsala, SWEDEN (June 2016).

M. Ishitaki, K. Ohnishi, and T. Kimura:
"Superconducting properties in ferromagnet/superconductor hybrid nano-structures."
9th International Symposium on Metallic Multilayers, Uppsala, SWEDEN (June 2016).

T. Ogawa, G. Uematsu, Y. Yokotani, K. Yamanoi, T. Nomura, M. Kawakita, and T. Kimura:
"Efficient thermal spin injection using CoFe-based alloy."
2016 Joint MMM-Intermag Conference, San Diego, USA (January 2016).

G. Uematsu, T. Ogawa, S. Hu, K. Yamanoi, M. Kawakita, and T. Kimura:
"Adjustment of Co/Fe ratio for efficient thermal spin injection in CoFeAl alloy."
2016 Joint MMM-Intermag Conference, San Diego, USA (January 2016).

M. Kawakita, K. Okabe, Y. Yokotani, K. Yamanoi, and T. Kimura:
"Spin transport properties in a Cu wire fabricated on a magnetic insulator NiO."
2016 Joint MMM-Intermag Conference, San Diego, USA (January 2016).

Y. Ono, M. Sakamoto, K. Ohnishi. And T. Kimura:
"Interplay between the superconducting and magnetic proximity effects in Nb/Cu/NiFe tri-layered structures."
2016 Joint MMM-Intermag Conference, San Diego, USA (January 2016).

K. Yamanoi, Y. Yokotani, S. Yakata, and T. Kimura:
"Evaluation of heating effect and thermal spin injection due to ferromagnetic resonance."
2016 Joint MMM-Intermag Conference, San Diego, USA (January 2016).

Y. Yokotani, K. Yamanoi, S. Yakata, and T. Kimura:
"Systematic study on dynamical spin injection from CoFeAl using laterally configured structure."
2016 Joint MMM-Intermag Conference, San Diego, USA (January 2016).

2015

T. Kimura:
"Efficient thermal spin injection using CoFe-based alloy."
Korea-Japan Spin-orbit workshop, Daejeon, KOREA (November 2015).

K. Ohnishi, Y. Ono, M. Sakamoto, and T. Kimura:
"Spin current transport in a Nb/Cu/NiFe tri-layer structure."
Korea-Japan Spin-orbit workshop, Daejeon, KOREA (November 2015).

T. Kimura:
"Efficient Spin Injection and Absorption Using CoFe-Based Alloys and Its Application."
2nd International Symposium on Frontiers in Materials Science (FMS2015), Tokyo, JAPAN (November 2015).

S. Hu, T.Nomura, G. Uematsu, and T. Kimura:
"Indirect detection of magnetization direction using thermal spin injection."
2nd International Symposium on Frontiers in Materials Science (FMS2015), Tokyo, JAPAN (November 2015).

K. Ohnishi, Y. Ono, M. Sakamoto, and T. Kimura:
"Spin current transport in a Nb/Cu/NiFe tri-layer structure."
20th International Conference on Magnetism (ICM2015) 2015, Barcelona, SPAIN (July 2015).

M. Kawakita, K. Okabe, T. Nomura, S. Yakata, and T. Kimura:
"Modulation of spin transport using anti-ferromagnetic insulator film."
20th International Conference on Magnetism (ICM2015) 2015, Barcelona, SPAIN (July 2015).

K. Yamanoi, Y. Yokotani, S. Yakata, and T. Kimura:
"Excitation of nonlinear ferromagnetic resonance and standing spin wave under strong ac magnetic field."
20th International Conference on Magnetism (ICM2015) 2015, Barcelona, SPAIN (July 2015).

T. Nomura, G. Uematsu, and T. Kimura:
"Detection of spin-dependent Peltier effect using lateral spin valve."
20th International Conference on Magnetism (ICM2015) 2015, Barcelona, SPAIN (July 2015).

G. Uematsu, T. Nomura, K. Okabe, M. Kawakita, S. Hu, and T. Kimura :
"Enhancement of spin-injection-induced electrical voltage using thermally excited CoFeAl film."
20th International Conference on Magnetism (ICM2015) 2015, Barcelona, SPAIN (July 2015).

Y. Yokotani, K. Yamanoi, S. Yakata, and T. Kimura:
"Detection of standing spin waves and investigation of the spin wave stabilities under high power excitations."
20th International Conference on Magnetism (ICM2015) 2015, Barcelona, SPAIN (July 2015).

K. Okabe, M. Kawakita, S. Yakata, T. Kawae, and T. Kimura:
"Electric field effect in CoFeB/NiO exchange coupled system."
20th International Conference on Magnetism (ICM2015) 2015, Barcelona, SPAIN (July 2015).

T. Kimura:
"Thermal spin injections using CoFe-based alloy."
International Workshop "Nano-Spin Sciences II", Fukuoka, JAPAN (July 2015).

K. Ohnishi, Y. Ono, M. Sakamoto, and T. Kimura:
"Spin current insulationat a superconducting/normal metal interface."
International Workshop "Nano-Spin Sciences II", Fukuoka, JAPAN (July 2015).

T. Kimura:
"Large spin-dependent thermoelectric effects using CoFe-based alloy." (invited)
International Conference and Exhibition on Mesoscopic and Condensed Matter Physics, Boston, USA (June 2015).

K. Ohnishi, Y. Ono, M. Sakamoto, and T. Kimura:
"Spin current transport in a Nb/Cu/NiFe tri-layer structure."
New Perspectives in Spintronic and Mesoscopic Physics (NPSMP) 2015, Kashiwa, JAPAN (June 2015).

K. Ohnishi, Y. Ono, M. Sakamoto, and T. Kimura:
"Spin Current Manipulation Using Superconductor." (invited)
BIT's 4th Annual World Congress of Adcvanced Materials-2015 (WCAM-2015), Chongqing, CHINA (May 2015).

T. Kimura:
"Highly efficient thermal spin injection using CoFeAl injector." (invited)
IEEE International Magnetics Conference (Intermag) 2015, Beijing, China (May 2015).

K. Okabe, M. Kawakita, S. Yakata, and T. Kimura:
"Influence of ferromagnetic electrodes on the resistive switching device based on NiO."
IEEE International Magnetics Conference (Intermag) 2015, Beijing, China (May 2015).

X. Cui, S. Yakata, and T. Kimura:
"2nd harmonic detection of nonlinear vortex oscillation under strong RF magnetic field based on the anisotropic magnetoresistance effect."
IEEE International Magnetics Conference (Intermag) 2015, Beijing, China (May 2015).

S. Hu, X. Cui, T. Nomura, and T. Kimura:
"Precise evaluation of small spin-dependent Seebeck coefficient for Permalloy using lateral spin valve."
IEEE International Magnetics Conference (Intermag) 2015, Beijing, China (May 2015).

K. Yamanoi, Y. Yokotani, S. Yakata, and T. Kimura:
"Dynamical spin injection induced by FMR heating effect in CoFeAl strip."
IEEE International Magnetics Conference (Intermag) 2015, Beijing, China (May 2015).

M. Kawakita, K. Okabe, S.Yakata, and T. Kimura:
"Fabrication of Laterally-Configured Resistive Switching Device with Spin-Polarized Nano-Gap Electrodes."
IEEE International Magnetics Conference (Intermag) 2015, Beijing, China (May 2015).

Y. Yokotani, K. Yamanoi, S. Yakata, and T. Kimura:
"Excitations of Nonlinear Ferromagnetic Resonance and Standing Spin Wave using Inhomogeneous High-Power RF Magnetic Field."
IEEE International Magnetics Conference (Intermag) 2015, Beijing, China (May 2015).

G. Uematsu, T. Nomura, S. Hu, M. Hidegara, and T. Kimura :
"Enhancement of thermal spin signal and suppression of anomalous Nernst effect in the CoFeAl/Cu/CoFeAl lateral spin valve."
IEEE International Magnetics Conference (Intermag) 2015, Beijing, China (May 2015).

T. Kimura:
"Excellent Material for Thermal Spin Injection and Its Application." (invited)
Energy Materials Nanotechnology (EMN) Phuket Meeting 2015, Phuket, THILAND (May 2015).

X. Cui, S. Yakata, and T. Kimura:
"Reconfigurable vortex oscillations using an isosceles triangular ferromagnetic dot."
5th Zing Bionanomaterials Conference, Carvoeiro, PORTUGAL (April 2015).

T. Kimura:
"Dynamic property of the coupled vortices in an isosceles triangle."
International Workshop "Nano-Spin Sciences", Karatsu, Japan (Februaly 2015).

K. Ohnishi, Y. Ono, M. Sakamoto, and T. Kimura:
"Spin current insulation at a superconducting/normal metal interface."
International Workshop "Nano-Spin Sciences", Karatsu, Japan (Februaly 2015).

K. Okabe, M. Kawakita, S. Yakata, and T. Kimura:
"Electric-field-induced phase transition using spin-polarized electrode."
International Workshop "Nano-Spin Sciences", Karatsu, Japan (Februaly 2015).

T. Nomura, G. Uematsu, and T. Kimura:
""Thermally-driven spin injection and spin-injection-induced heat ejection"."
International Workshop "Nano-Spin Sciences", Karatsu, Japan (Februaly 2015).

K. Yamanoi, Y. Yokotani, and T. Kimura:
"Detection of heating effect induced by spin dynamics in a ferromagnetic thin film."
International Workshop "Nano-Spin Sciences", Karatsu, Japan (Februaly 2015).

Y. Takaira, S. Hu, T. Nomura, and T. Kimura:
"Spin transports and its control in nonmagnetic bended wires."
International Workshop "Nano-Spin Sciences", Karatsu, Japan (Februaly 2015).

Y. Yokotani, K. Yamanoi, S. Yakata, and T. Kimura:
"Excitation of nonlinear ferromagnetic resonance and standing spin wave under strong ac magnetic field."
International Workshop "Nano-Spin Sciences", Karatsu, Japan (Februaly 2015).

M. Sakamoto, Y. Ono, K. Ohnishi, and T. Kimura:
""Possibility to control the Cooper-pair formation dynamics using multi-terminal spin injection"."
International Workshop "Nano-Spin Sciences", Karatsu, Japan (Februaly 2015).

M. Kawakita, K. Okabe, T. Nomura, S. Yakata, and T. Kimura:
"Modulation of spin current transport using magnetic oxide film."
International Workshop "Nano-Spin Sciences", Karatsu, Japan (Februaly 2015).

Y. Ono, K. Ohnishi, S. Yakata, and T. Kimura:
"Spin dynamics in aNb/Cu/NiFe tri-layerd structure."
International Workshop "Nano-Spin Sciences", Karatsu, Japan (Februaly 2015).

G. Uematsu, T. Nomura, S. Hu, M. Hidegara, and T. Kimura :
"Enhancement of thermal spin signal and suppression of anomalous Nernst effect in the CoFeAl/Cu/CoFeAl lateral spin valve."
International Workshop "Nano-Spin Sciences", Karatsu, Japan (Februaly 2015).

2014

T. Kimura:
"Highly efficient thermal spin injection using CoFeAl injector." (invited)
BIT's 4th Annual World Congress of Nano Science and Technology-2014 (Nano S&T-2014), Qingdao, CHINA (October 2014).

Y. Ono, K. Ohnishi, S. Yakata, and T. Kimura:
"Spin dynamics in a Nb/Cu/NiFe tri-layered structure."
IUMRS International Conference in Asia (IUMRS-ICA) 2014, Fukuoka, Japan (August 2014).

K. Ohnishi, Y. Ono, T. Nomura, and T. Kimura:
"Spin current reflection due to a superconducting gap in a Nb/Cu/NiFe tri-layered structure."
IUMRS International Conference in Asia (IUMRS-ICA) 2014, Fukuoka, Japan (August 2014).

X. Cui, S. Yakata, and T. Kimura:
"2nd harmonic detection of nonlinear vortex oscillation under strong RF magnetic field based on the anisotropic magnetoresistance effect."
IUMRS International Conference in Asia (IUMRS-ICA) 2014, Fukuoka, Japan (August 2014).

S. Hu, and T. Kimura:
"Efficient lateral spin valve device consisting of different ferromagnetic nanopillars."
IUMRS International Conference in Asia (IUMRS-ICA) 2014, Fukuoka, Japan (August 2014).

M. Hidegara, T. Nomura, K. Ohnishi, M. Hara, and T. Kimura:
"Magnetic and transport properties of submicron Gd Strip."
IUMRS International Conference in Asia (IUMRS-ICA) 2014, Fukuoka, Japan (August 2014).

M. Kawakita, K. Ohnishi, S. Yamada, and T. Kimura:
"Control of GdOx transport by spin-polarized nanogap electrodes."
IUMRS International Conference in Asia (IUMRS-ICA) 2014, Fukuoka, Japan (August 2014).

T. Nomura, and T. Kimura:
"Spin precession due to in-plane magnetic field in a CoFeAl/Cu/CoFeAl metallic lateral spin valve."
IUMRS International Conference in Asia (IUMRS-ICA) 2014, Fukuoka, Japan (August 2014).

2013

T. Kimura:
"Highly efficient thermal spin injection using CoFeAl injector." (invited)
Energy Materials Nanotechnology (EMN) Fall Meeting, Orland, USA (December 2013).

S. Hu, and T. Kimura:
"Giant thermal spin accumulation in NLSV structure by using CoFeAl/Cu interface at room temperature."
58th Annual Magnetism and Magnetic Materials Conference (MMM2013), Denver, USA (November 2013).

X. Cui, S. Yakata, and T. Kimura:
"Detection of nonlinear vortex oscillation under strong RF magnetic field using anisotropic magnetoresistance effect."
58th Annual Magnetism and Magnetic Materials Conference (MMM2013), Denver, USA, (November 2013).

T. Kimura:
"Generation of large spin current in metallic nanostructures and its application." (invited)
Energy Materials Nanotechnology (EMN) East Meeting, Beijing, China (September 2013).

S. Yakata, and T. Kimura:
"Wide-range tuning of vortex-core resonance using asymmetric confined potential in a triangular permalloy dot."
8th International Symposium on Metallic Multilayers (MML2013), Kyoto, Japan (May 2013).

S. Hu, and T. Kimura:
"Asymmetric field dependence of nonlocal spin valve signal under high bias current injection."
8th International Symposium on Metallic Multilayers (MML2013), Kyoto, Japan, (May 2013).

X. Cui, S. Yakata, and T. Kimura:
"Sensitive detection of vortex-core dynamics under RF magnetic field using anisotropic."
8th International Symposium on Metallic Multilayers (MML2013), Kyoto, Japan, (May 2013).

S. Bakaul, S. Hu, and T. Kimura:
"Temperature gradient assisted spin transport in nonlocal lateral spin valves."
APS March Meeting 2013, Baltimore, USA (March 2013).