title: Experimental verification of comparability between spin-orbit and spin-diffusion lengths.
abstract: We experimentally confirmed that the spin-orbit lengths of noble metals obtained from weak antilocalization measurements are comparable to the spin diffusion lengths determined from lateral spin valve ones. Even for metals with strong spin-orbit interactions such as Pt, we verified that the two methods gave comparable values which were much larger than those obtained from recent spin torque ferromagnetic resonance measurements. To give a further evidence for the comparability between the two length scales, we measured the disorder dependence of the spin-orbit length of copper by changing the thickness of the wire. The obtained spin-orbit length nicely follows a linear law as a function of the diffusion coefficient, clearly indicating that the Elliott-Yafet mechanism is dominant as in the case of the spin diffusion length.
authors: Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwa-no-ha, Kashiwa, Chiba 277-8581, Japan. niimi@issp.u-tokyo.ac.jp
authors: Yasuhiro
authors: Y
authors: Niimi
authors: Dahai
authors: D
authors: Wei
authors: Hiroshi
authors: H
authors: Idzuchi
authors: Taro
authors: T
authors: Wakamura
authors: Takeo
authors: T
authors: Kato
authors: Yoshichika
authors: Y
authors: Otani