Author/Authors :
C.M. Hu، نويسنده , , J. Nitta، نويسنده , , A. Jensen، نويسنده , , J.B. Hansen، نويسنده , , H. Takayanagi، نويسنده , , T. Matsuyama، نويسنده , , D. Gründler، نويسنده , , G. Meier، نويسنده , , D. Heitmann، نويسنده , , U. Merkt، نويسنده ,
Abstract :
We present a model that describes the spin injection across a single interface with two electrodes. The spin-injection rate across a typical hybrid junction made of ferromagnet (FM) and a two-dimensional electron gas (2DEG) is found at the percentage level. We perform spin-injection-detection experiment on devices with two ferromagnetic contacts on a 2DEG confined in an InAs quantum well. A spin-injection rate of 4.5% is estimated from the measured magnetoresistance.
