Giant enhancement of spin accumulation in nonmagnetic silver  - A path toward the development of ultrasensitive magnetic sensor and high-capacity nonvolatile memory –


Institute for Materials Research, Tohoku University, RIKEN, Institute for Solid State Physics, University of Tokyo, and Japan Atomic Energy Agency (JAEA) have developed a spintronic device consisting of a nonmagnetic nanowire (Ag) and two ferromagnetic wires separated by magnesium oxide layers. This enables efficient spin injection and spin accumulation in silver with over 100-fold higher output voltage due to large spin accumulation, which is the highest value in the world. This achievement has been acquired by Assistant Professor Saburo Takahashi at Institute for Materials Research, Tohoku University, in collaboration with Team Leader Yoshichika Otani and Deputy Team Leader Yasuhiro Fukuma at Quantum Nano-Scale Magnetics Team, RIKEN Advanced Science Institute, and Director Sadamichi Maekawa at Advanced Science Research Center of JAEA.
  The research results have been published online in Nature Materials on June 12, 2011.