Rashba, Emmanuel2016-03-152002Rashba, Emmanuel I. 2002. “Complex Impedance of a Spin Injecting Junction.” Applied Physics Letters 80 (13): 2329. doi:10.1063/1.1465527.0003-6951http://nrs.harvard.edu/urn-3:HUL.InstRepos:25876580Theory of the ac spin injection from a ferromagneticelectrode into a normal conductor through a tunnel or Schottky contact is developed. Diffusion and relaxation of nonequilibrium spins results in a frequency-dependent complex impedance Z(ω)Z(ω) controlled by the spin relaxation rates and the resistances involved. Explicit expression for Z(ω)Z(ω) is presented. Experimental investigation of the frequency dependence of Z should allow measuringspin relaxation times in both conductors, their effective resistances, and also the parameters of the contact controlling the spin injection.en-USJournal Article2016-01-29Emmanuel I. Rashbaa)2016-03-1510.1063/1.1465527