These two layers are separated by a magnetic junction
tunnel (MTJ) as a carrier. If they are not parallel, MTJ
resistivity is high and used to code “1”; if they are parallel,
MTJ incurs low resistivity which is coded as “0”. The cell is
accessed by an NMOS transistor that is connected to the wordline
and
bit-line
(Figure
1).
As
the
resistance
difference
between
these
two
states is large,
applying
a small
voltage