Alternative designs for magnetic recording assisted by a single Spin Hall Effect (SHE) layer in the write gap

A Spin Hall Effect (SHE) assisted magnetic recording (SHAMR) device, comprising:

• (a) a main pole (MP) that is configured to generate a magnetic (write) field in a MP tip with a front side at an air bearing surface (ABS), and having a local magnetization that is proximate to a MP trailing side and substantially in a direction of a write gap (WG) flux field between the MP tip and a trailing shield, and across an adjoining WG having a first thickness;
• (b) the trailing shield (TS) with a front side at the ABS, and a local magnetization proximate to a TS bottom surface that faces the MP and substantially in a direction of the WG flux field;
• and
• (c) a Spin Hall Effect (SHE) layer formed in the WG and comprised of a Spin Hall Angle (SHA) material having a thickness less than the first thickness, wherein the SHE layer is configured to generate a first transverse spin transfer torque that tilts the local MP magnetization to a direction that is more orthogonal to the ABS thereby enhancing the write field when a first current (I1) is applied between the MP trailing side and SHE layer, or to generate a second transverse spin transfer torque that tilts the local TS magnetization to a direction that is more orthogonal to the ABS to increase a TS return field when a second current (I2) is applied between the TS and the SHE layer.