Patent ID: 11922986
Assignee: SHANDONG UNIVERSITY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 3:
4. A method of adjusting and controlling the exchange biases in the two directions to achieve multiple-state storage capability in the single magnetic heterojunction structure according to claim 1, comprising the following steps:
(A) current pulses and an external field are applied at the same time to set the in-plane exchange bias to a particular direction;
(B) only current pulses are applied to adjust and control the perpendicular exchange bias through the spin-orbit torque effect without changing the direction of the in-plane exchange bias to achieve multiple-state storage; the specific method is as follows: the spin arrangement mode of the interface between the perpendicular ferromagnetic layer and the perpendicular anti-ferromagnetic layer is adjusted and controlled through the amplitude control of the current pulses applied; different spin arrangement modes are associated to different Hall resistance values, and different Hall resistance states is used to store different information, thus achieving multiple-state storage capability.