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6 papers · 2 filters
Large enhancement in the generation efficiency of pure spin currents in Ge using Heusler-compound Co_2FeSi electrodes
K. Kasahara, Y. Fujita, S. Yamada +3
We show nonlocal spin transport in n-Ge based lateral spin-valve devices with highly ordered Co_2FeSi/n^+-Ge Schottky tunnel contacts. Clear spin-valve signals and Hanle-effect cur…
Thermodynamic Self Assembly of Two-Dimensional pi-Conjugated Metal-Porphyrin Covalent Organic Frameworks by On-Site Equilibrium Polymerization
Ryota Tanoue, Rintaro Higuchi, Kiryu Ikebe +5
Two dimensional pi conjugated metal porphyrin covalent organic frameworks were produced in aqueous solution on an iodine-modified Au(111) surface by on site azomethine coupling of…
Photoluminescence modulation of ZnO via coupling with the surface plasmon resonance of gold nanoparticles
Dongyan Zhang, Hiroki Ushita, Pangpang Wang +4
In this letter, we study how coupling between AuNPs and ZnO thin films affects their emission properties. The emission intensity of ZnO thin films changes when Al2O3 spacer layer o…
Giant enhancement of spin pumping efficiency using Fe3Si ferromagnet
Y. Ando, K. Ichiba, S. Yamada +4
Spincurrentronics, which involves the generation, propagation and control of spin currents, has attracted a great deal of attention because of the possibility of realizing dissipat…
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…
Effect of Co-Fe substitutions on the room-temperature spin polarization in Co_3-xFe_xSi Heusler-compound films
K. Tanikawa, S. Oki, S. Yamada +3
Using low-temperature molecular beam epitaxy, we study substitutions of Fe atoms for Co ones in Co_3-xFe_xSi Heusler-compound films grown on Si and Ge. Even for the low-temperature…