Karunaratne, D. K.; Bhanja, Sanjukta; , "Study of single layer and multilayer nano-magnetic logic architectures," Journal of Applied Physics , vol.111, no.7, pp.07A928-07A928-3, Apr 2012
doi: 10.1063/1.3676052
URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6164057&isnumber=6146259
Abstract:
Nano-magnetic logic (NML) has been a promising technology for logic computation. Contribution
of this paper is two-fold. First, we have fabricated and captured MFM images of a NML architecture
that has computed the majority of seven variables. This logic block can potentially implement eight
different logic functions that could be configured in real-time. Next, we have performed a set of
experiments with a multilayer stack of Co/Cu/NiFe with a perpendicular
magnetic anisotropy bottom layer to realize neighbor interaction between adjacent free layers of
devices. Based on the MFM images, we conclude that dipolar coupling between the free layers of
the neighboring spin-valve based NML (SVBN) devices can be exploited to construct local
elements such as majority gates, inverters and interconnects. Since magnetic multilayer stacks have
already been implemented in memory devices to read/write data, SVBN devices would not only
solve the input/output problems in NML but also would have potential in logic-in-memory
applications.VC 2012 American Institute of Physics. [doi:10.1063/1.3676052]
doi: 10.1063/1.3676052
URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6164057&isnumber=6146259
Abstract:
Nano-magnetic logic (NML) has been a promising technology for logic computation. Contribution
of this paper is two-fold. First, we have fabricated and captured MFM images of a NML architecture
that has computed the majority of seven variables. This logic block can potentially implement eight
different logic functions that could be configured in real-time. Next, we have performed a set of
experiments with a multilayer stack of Co/Cu/NiFe with a perpendicular
magnetic anisotropy bottom layer to realize neighbor interaction between adjacent free layers of
devices. Based on the MFM images, we conclude that dipolar coupling between the free layers of
the neighboring spin-valve based NML (SVBN) devices can be exploited to construct local
elements such as majority gates, inverters and interconnects. Since magnetic multilayer stacks have
already been implemented in memory devices to read/write data, SVBN devices would not only
solve the input/output problems in NML but also would have potential in logic-in-memory
applications.VC 2012 American Institute of Physics. [doi:10.1063/1.3676052]
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