Invention Grant
US09589619B2 Spin-orbit-torque magnetoresistive random access memory with voltage-controlled anisotropy 有权
具有电压控制各向异性的自旋轨道转矩磁阻随机存取存储器

Spin-orbit-torque magnetoresistive random access memory with voltage-controlled anisotropy
Abstract:
Methods and apparatus relating to spin-orbit-torque magnetoresistive random access memory with voltage-controlled anisotropy are disclosed. In an example, disclosed is a three-terminal magnetic tunnel junction (MTJ) storage element that is programmed via a combination of voltage-controlled magnetic anisotropy (VCMA) and spin-orbit torque (SOT) techniques. Also disclosed is a memory controller configured to program the three-terminal MTJ storage element via VCMA and SOT techniques. The disclosed devices improve efficiency over conventional devices by using less write energy, while having a design that is simpler and more scalable than conventional devices. The disclosed devices also have increased thermal stability without increasing required switching current, as critical switching current between states is essentially the same.
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