142 citations · 501 across the 22 of their papers we have counts for
20 papers · 1 filter
Spin-pump-induced spin transport demonstration in a photoconductive PTCDA molecular thin film with a transparent spin current detector
Yuri Matsukawa, Eiji Shikoh
We demonstrate spin-pump-induced spin transport in a photoconductive PTCDA (3,4,9,10-perylene-teracarboxylic dianhydride) molecular thin film with a transparent ITO (In2O3 + SnO2)…
Spin current relaxation time in thermally evaporated naphthyl diamine derivative films
Eiji Shikoh, Yuichiro Onishi, Yoshio Teki
The spin relaxation time (tau) on the spin transport in thermally evaporated thin films of a naphthyl diamine derivative: N, N'-Bis(naphthalen-1-yl)-N, N'-bis(phenyl)-2,2'-dimethyl…
Spin transport properties in a naphthyl diamine derivative film investigated by the spin pumping
Yuichiro Onishi, Yoshio Teki, Eiji Shikoh
We report the spin transport properties in a thin film of a naphthyl diamine derivative: N,N'-Bis(naphthalen-1-yl)-N,N'-bis(phenyl)-2,2'-dimethylbenzidine (alpha-NPD). In a palladi…
An energy harvesting technology controlled by ferromagnetic resonance
Yuta Nogi, Yoshio Teki, Eiji Shikoh
We have successfully demonstrated electrical charging using the electromotive force (EMF) generated in a ferromagnetic metal (FM) film under ferromagnetic resonance (FMR). In the c…
Spin injection into vanadium dioxide films from a typical ferromagnetic metal, across the metal-insulator transition of the vanadium dioxide films
Kazuma Tamura, Teruo Kanki, Shun Shirai +3
A vanadium dioxide VO2 film shows metal-insulator transition (MIT) induced by changing environmental temperature. We report the temperature dependence of electromotive force proper…
Pure spin current in a robust pigment-red film
Kazuhiro Nishida, Yoshio Teki, Eiji Shikoh
We report the spin current properties in a pigment-red (perylene-3,4,9,10-tetracarboxylic dianhydride: PTCDA) film prepared by thermal evaporation. In a palladium(Pd)/PTCDA/Ni80Fe2…
Electromotive forces generated in 3d-transition ferromagnetic metal films themselves under their ferromagnetic resonance
Kazunari Kanagawa, Yoshio Teki, Eiji Shikoh
We report the electromotive force (EMF) properties generated in 3d-transition ferromagnetic metal (FM = Fe, Co, and Ni80Fe20) films themselves under their ferromagnetic resonance (…
Spin current relaxation time in thermally evaporated pentacene films
Yasuo Tani, Takuya Kondo, Yoshio Teki +1
The spin current relaxation time [tau] in thermally evaporated pentacene films was evaluated with the spin-pump-induced spin transport properties and the charge current transport p…
Strong evidence for d-electron spin transport at room temperature at a LaAlO3/SrTiO3 interface
Ryo Ohshima, Yuichiro Ando, Kosuke Matsuzaki +8
A d-orbital electron has an anisotropic electron orbital and is a source of magnetism. The realization of a 2-dimensional electron gas (2DEG) embedded at a LaAlO3/SrTiO3 interface…
Spin-pump-induced spin transport in a thermally-evaporated pentacene film
Yasuo Tani, Yoshio Teki, Eiji Shikoh
We report the spin-pump-induced spin transport properties of a pentacene film prepared by thermal evaporation. In a palladium(Pd)/pentacene/Ni80Fe20 tri-layer sample, a pure spin-c…
Spin pumping using an Ni80Fe20 thin film annealed in a magnetic field
Hideki Shimogiku, Naoyuki Hanayama, Yoshio Teki +2
Spin pumping controlled with the ferromagnetic resonance of an Ni80Fe20 thin film annealed in a magnetic field was performed in order to investigate the simple and efficient genera…
Temperature Dependence of Spin Hall Angle of Palladium
Zhenyao Tang, Yuta Kitamura, Eiji Shikoh +3
In this study, the temperature dependence of the spin Hall angle of palladium (Pd) was experimentally investigated by spin pumping. A Ni80Fe20/Pd bilayer thin film was prepared, an…
Dynamical Spin Injection into p-type Germanium at Room Temperature
Mariko Koike, Eiji Shikoh, Yuichiro Ando +4
We demonstrate dynamical spin injection into p-type germanium (Ge) at room temperature (RT) using spin pumping. The generated pure spin current is converted to a charge current by…
Vertical Spin Transport in Al with Pd/Al/Ni80Fe20 Trilayer Films at Room Temperature by Spin Pumping
Yuta Kitamura, Eiji Shikoh, Yuichiro Ando +2
Spin pumping enables the vertical transport of pure spin current through Al in a Pd/Al/Ni80Fe20(Py) trilayer film, in which the Py acts as a spin battery. The spin current injected…
An investigation of the inverted Hanle effect in highly-doped Si
Yasunori Aoki, Makoto Kameno, Yuichiro Ando +7
The underlying physics of the inverted Hanle effect appearing in Si was experimentally investigated using a Si spin valve, where spin transport was realized up to room temperature.…
Bipolar-Driven Large Magnetoresistance in Silicon
Michael P. Delmo, Eiji Shikoh, Teruya Shinjo +1
Large linear magnetoresistance (MR) in electron-injected p-type silicon at very low magnetic field is observed experimentally at room temperature. The large linear MR is induced in…
Observation of Huge Magnetoresistance and Multiferroic-like Behavior of Co Nanoparticles in a C60 matrix
Yutaka Sakai, Eiiti Tamura, Shuhei Toyokawa +6
Tunneling magnetoresistance (TMR) via oxides or molecules includes fruitful physics, such as spin filtering and hybridized interface states, in addition to various practical applic…
The effect of spin drift on spin accumulation voltages in highly-doped Si
Makoto Kameno, Eiji Shikoh, Teruya Shinjo +5
An investigation was carried out into the effect of spin drift on spin accumulation signals in highly-doped Si using non-local 4-terminal (NL-4T) and 3-terminal (NL-3T) methods. Th…
Spin-pumping-induced spin transport in p-type Si at room temperature
Eiji Shikoh, Kazuya Ando, Eiji Saito +3
A spin battery concept is applied for the dynamical generation of pure spin current and spin transport in p-type silicon (p-Si). Ferromagnetic resonance and effective s-d coupling…
Experimental Investigation of Spin Transport Properties in Silicon by Using a Non-local Geometry
Masashi Shiraishi, Yoshiya Honda, Eiji Shikoh +6
A systematic investigation of spin transport properties in silicon at 8 K by using a non-local geometry is presented. The spin injection signal in the non-local scheme is found to…