Apparatus and method for measuring magnetic field using spin-hall effect

摘要

The present invention relates to an apparatus and a method for measuring a magnetic field, and more particularly, to a method and apparatus for measuring a magnetic field by injecting a spin current into a magnetic body having magnetic anisotropy using a spin Hall phenomenon in a current applied to a conductor, And calculating the degree of movement of the magnetic hysteresis curve in the magnetic body while inverting the magnetic field of the magnetic body. The present invention relates to a magnetic field measurement apparatus and method capable of precisely measuring an external magnetic field applied to the magnetic body. A magnetic field measuring apparatus for measuring a first magnetic field applied from the outside, comprising: current applying means for applying a current to a conductor; A conductor having a spin current formed by receiving a current from the current application means; A magnetic body having magnetic anisotropy into which a spin current formed in the conductor is injected; Magnetic field applying means for applying a second magnetic field to the magnetic body; And a degree of shift of a hysteresis of the magnetic body due to the application of the first magnetic field to a magnetic hysteresis of the magnetic body in a state where the first magnetic field is not applied And a controller for calculating the intensity of the first magnetic field using the calculated magnetic field.