title: 5d iridium oxide as a material for spin-current detection.
abstract: Devices based on pure spin currents have been attracting increasing attention as key ingredients for low-dissipation electronics. To integrate such spintronics devices into charge-based technologies, electric detection of spin currents is essential. The inverse spin Hall effect converts a spin current into an electric voltage through spin-orbit coupling. Noble metals such as Pt and Pd, and also Cu-based alloys, have been regarded as potential materials for a spin-current injector, owing to the large direct spin Hall effect. Their spin Hall resistivity ρSH, representing the performance as a detector, is not large enough, however, due mainly because of their low charge resistivity. Here we report that a binary 5d transition metal oxide, iridium oxide, overcomes the limitations encountered in noble metals and Cu-based alloys and shows a very large ρSH~38 μΩ cm at room temperature.
authors: 1] RIKEN Advanced Science Institute, Wako, Saitama 351-0198, Japan [2].
authors: Kohei
authors: K
authors: Fujiwara
authors: Yasuhiro
authors: Y
authors: Fukuma
authors: Jobu
authors: J
authors: Matsuno
authors: Hiroshi
authors: H
authors: Idzuchi
authors: Yasuhiro
authors: Y
authors: Niimi
authors: Yoshichika
authors: Y
authors: Otani
authors: Hidenori
authors: H
authors: Takagi