Patent ID: 8295006
Filing Date: 2012-10-23
Classification: G01R,G11B,G11C,Y10T

Abstract:
1. A magnetic sensor comprising: a stacked film having a nonmagnetic spin Hall layer, a magnetic layer, and a nonmagnetic insulator layer arranged between the nonmagnetic spin Hall layer and the magnetic layer; an electrode nonmagnetic terminal pair connected to a side surface of the nonmagnetic spin Hall layer; and a unit applying a current in a film thickness direction of the stacked film, wherein the nonmagnetic spin Hall layer is a layer in which up spins and down spins of the spin Hall effect are bent in a reverse direction in a nonmagnetic body due to spin-orbital interaction, a thickness of the nonmagnetic spin Hall layer is thinner than twice a spin diffusion length of a material constituting the nonmagnetic spin Hall layer, and a magnetization direction of the magnetic layer magnetized by an external magnetic field is detected due to the polarity of a voltage across both ends of the electrode nonmagnetic terminal pair.