发明授权
US08164947B2 Low current switching magnetic tunnel junction design for magnetic memory using domain wall motion 有权
低电流切换磁隧道结设计,用于使用畴壁运动的磁存储器

Low current switching magnetic tunnel junction design for magnetic memory using domain wall motion
摘要:
A multi-state low-current-switching magnetic memory element (magnetic memory element) comprising a free layer, two stacks, and a magnetic tunneling junction is disclosed. The stacks and magnetic tunneling junction are disposed upon surfaces of the free layer, with the magnetic tunneling junction located between the stacks. The stacks pin magnetic domains within the free layer, creating a free layer domain wall. A current passed from stack to stack pushes the domain wall, repositioning the domain wall within the free layer. The position of the domain wall relative to the magnetic tunnel junction corresponds to a unique resistance value, and passing current from a stack to the magnetic tunnel junction reads the magnetic memory element's resistance. Thus, unique memory states may be achieved by moving the domain wall.
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