195 citations · 400 across the 13 of their papers we have counts for
13 papers
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…
Glass-patternable notch-shaped microwave architecture for on-chip spin detection in biological samples
Keisuke Oshimi, Yushi Nishimura, Tsutomu Matsubara +16
We report a notch-shaped coplanar microwave waveguide antenna on a glass plate designed for on-chip detection of optically detected magnetic resonance (ODMR) of fluorescent nanodia…
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…
Wide-field fluorescent nanodiamond spin measurements toward real-time large-area intracellular quantum thermometry
Yushi Nishimura, Keisuke Oshimi, Yumi Umehara +8
In this study, we analyze the operational process of nanodiamond (ND) quantum thermometry based on wide-field detection of optically detected magnetic resonance (ODMR) of nitrogen…
Real-time estimation of the optically detected magnetic resonance shift in diamond quantum thermometry
Masazumi Fujiwara, Alexander Dohms, Ken Suto +6
We investigate the real-time estimation protocols for the frequency shift of optically detected magnetic resonance (ODMR) of nitrogen-vacancy (NV) centers in nanodiamonds (NDs). Ef…
Real-time nanodiamond thermometry probing in-vivo thermogenic responses
Masazumi Fujiwara, Simo Sun, Alexander Dohms +12
Real-time temperature monitoring inside living organisms provides a direct measure of their biological activities, such as homeostatic thermoregulation and energy metabolism. Howev…
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…
Effect of surface oxidation on electron spin coherence of single nitrogen-vacancy centers in nanodiamonds
Ryuta Tsukahara, Masazumi Fujiwara, Yoshihiko Sera +6
Fluorescent nanodiamonds (NDs) are crystal defect-based light-emitting nanoparticles that can be applied to quantum information science and quantum sensing. Of particular interest…
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…
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…