Magnetic sensor using inverse spin hall effect

A magnetic data recording system, comprising:

• a housing;
• a magnetic media mounted within the housing;
• an actuator;
• a slider connected with the actuator for movement adjacent to the magnetic media;
• and
• a magnetic sensor formed on the slider, the magnetic sensor comprising a magnetic free layer, and a spin Hall layer formed of an electrically conductive, non-magnetic material formed adjacent to and directly in contact with the magnetic free layer, wherein the magnetic free layer extends from a media facing surface to a first distance that defines a stripe height, and wherein the spin Hall layer extends from the media facing surface to a second distance that is greater than the first distance;
• circuitry configured to cause an electrical current to flow through the magnetic free layer and the spin Hall layer in a direction that is perpendicular to the plane of the layers;
• and
• circuitry for measuring a voltage across the spin Hall layer in a direction that is substantially perpendicular to the direction of the electrical current.

A magnetic sensor, comprising:

• a magnetic free layer;
• a spin Hall layer formed of a non-magnetic, electrically conductive layer formed adjacent to magnetic free layer, wherein the magnetic free layer extends from a media facing surface to a first distance and the non-magnetic, electrically conductive layer extends from the media facing surface to a second distance that is greater than the first distance;
• and
• means for generating a voltage in the non-magnetic layer as a result of inverse spin Hall effect, the voltage being effected by a direction magnetization of the magnetic free layer.