US 12,457,909 B2
Magnetic domain wall moving element, magnetic array, and neuromorphic device
Shogo Yamada, Tokyo (JP)
Assigned to TDK CORPORATION, Tokyo (JP)
Filed by TDK CORPORATION, Tokyo (JP)
Filed on Nov. 28, 2022, as Appl. No. 17/994,751.
Prior Publication US 2024/0180044 A1, May 30, 2024
Int. Cl. H10N 50/80 (2023.01); G06N 3/065 (2023.01); H10B 61/00 (2023.01); H10N 50/20 (2023.01)
CPC H10N 50/80 (2023.02) [H10B 61/22 (2023.02); H10N 50/20 (2023.02); G06N 3/065 (2023.01)] 14 Claims
OG exemplary drawing
 
1. A magnetic domain wall moving element comprising:
a magnetic domain wall moving layer;
a reference layer;
a non-magnetic layer sandwiched between the magnetic domain wall moving layer and the reference layer;
a first electrode connected to the magnetic domain wall moving layer;
a second electrode connected to the magnetic domain wall moving layer at a position different from the first electrode; and
a third electrode connected to the reference layer,
wherein the magnetic domain wall moving layer includes
a first area in which an orientation direction of magnetization is fixed,
a second area in which the orientation direction of magnetization is fixed in a direction different from that of the first area, and
a third area sandwiched between the first area and the second area and in which the orientation direction of magnetization is changeable,
the first electrode is connected to the first area,
the second electrode is connected to the second area,
the magnetic domain wall moving layer has a length in a first direction longer than a length in a second direction orthogonal to the first direction when viewed in a lamination direction,
a read current flows between the second electrode and the third electrode, and
in the first direction, a center of the third area in the first direction is between a center of a first connection surface of the third electrode and the reference layer in the first direction and a center of a second connection surface of the second electrode and the magnetic domain wall moving layer in the first direction.