18367877. Non-localized Spin Valve Reader Hybridized with Spin Orbit Torque Layer (Western Digital Technologies, Inc.)

Non-localized Spin Valve Reader Hybridized with Spin Orbit Torque Layer

Organization Name

Western Digital Technologies, Inc.

Inventor(s)

Quang Le of San Jose CA (US)

Xiaoyong Liu of San Jose CA (US)

Brian R. York of San Jose CA (US)

Cherngye Hwang of San Jose CA (US)

Son T. Le of San Jose CA (US)

Hisashi Takano of Fujisawa-shi (JP)

Fan Tuo of Fujisawa-shi (JP)

Hassan Osman of San Jose CA (US)

Nam Hai Pham of Tokyo (JP)

Non-localized Spin Valve Reader Hybridized with Spin Orbit Torque Layer

This abstract first appeared for US patent application 18367877 titled 'Non-localized Spin Valve Reader Hybridized with Spin Orbit Torque Layer

Original Abstract Submitted

The present disclosure generally relates to a magnetic recording head comprising a read head. The read head comprises a sensor disposed at a media facing surface (MFS) and a spin generator spaced from the sensor and recessed from the MFS. The sensor and spin generators are disposed on a non-magnetic layer. The sensor comprises a free layer and the spin generator comprises at least one spin orbit torque (SOT) layer. The SOT layer may comprise topological material such as BiSb. The sensor is configured to detect a read signal using a first voltage lead and a second voltage lead. The spin generator is configured to inject spin current through the non-magnetic layer to the sensor using a first current lead and a second current lead. The shape of the non-magnetic layer is a triangular or trapezoidal shape to further concentrate spin current.