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7
SPIN-WAVE ARCHITECTURES
Mary Mehrnoosh Eshaghian-Wilner, Alex Khitun, Shiva Navab,
and Kang L. Wang
In this chapter, we present three nanoscale architectures: the reconfigurable
mesh, crossbar, and fully interconnected cluster. In these architectures, both
communication and computation are performed using spin waves. These archi-
tectures are capable of simultaneously transmitting multiple waves over different
frequencies. In addition, they can use the superposition property of the waves
and allow for concurrent writes. In these architectures, computation can be
done in both analog and digital modes. On the other hand, one shortcoming of the
spin-wave architectures is the limitation on the attenuation length of spin waves,
about 50 microns. To address this issue, a hierarchical multiscale design is
proposed that is an integration of the spin-wave modules within a MEMS
architecture.
7.1. INTRODUCTION
Spinwaves have been attracting scientific interest for a long time, but only recently
several experimental types of projects have been devoted to the problem of spin-
wave detection using the inductive voltage measurement technique [1, 2]. The
results indicate that spin-wave packets propagating in a 100 nm thick ferromag-
netic films may produce an inductive voltage in the order of several mV, suitable
for experimental detection [1]. The inductive voltage measurement technique
appears to be one of the most convenient physical methods for spin-wave
detection and integration in a semiconductor platform.
The authors of this chapter are listed alphabetically.
 
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