We study giant magnetoresistance at 4.20.3em0exK in magnetic multilayers with noncollinear magnetizations, and various thicknesses of one of the layers. We show that these measurements are extremely sensitive to the transverse spin currents in ferromagnets, and measure the transverse spin-current penetration length into a ferromagnet. The implications of our results for the spin-torque effect are discussed.
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Urazhdin et al. (2005) studied this question.
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