Patent ID: 8644055

Claim:
A magnetoresistive random-access memory (MRAM) cell comprising: a first doped region comprising a majority of p-type dopants, the first doped region being in electrical communication with a metal source line configured to conduct a source line voltage; a second doped region in the MRAM cell comprising a majority of n-type dopants, the second doped region being in electrical communication with a metal word line configured to conduct a word line voltage; a third doped region in the MRAM cell comprising a majority of p-type dopants, the second doped region being disposed between the first doped region and the third doped region; and a magnetic tunneling junction in electrical communication with the third doped region and a metal bit line configured to conduct a bit line voltage, the magnetic tunneling junction comprising: a first magnetic layer comprising a first magnetoresistive state and a second magnetoresistive state; a second magnetic layer being below the first magnetic layer and comprising a fixed magnetic state; and a tunneling barrier layer disposed between the first magnetic layer and the second magnetic layer; wherein the bit line voltage, the word line voltage, and the source line voltage are provided in a combination that enables a drive current to be provided to the magnetic tunneling junction to enable the first magnetic state of the magnetic tunneling junction.