Hoque, A., Rajaram, S., & Bhanja, S. (2021). A Study on Reconfigurable Nanomagnetic Array and Effect of Gilbert Damping on Reconfigurability. IEEE Transactions on Nanotechnology, 20, 503-506.
Abstract:
A
2-D grid of circular nanomagnets (NMs) has been effectively used to
solve binary quadratic optimization problems via magnetic interaction in
the X-Y plane. Reconfiguring this architecture is challenging due to
the geometry and spacing constraints imposed by the computational
algorithm, but can be achieved by destabilizing the uniform and
unidirectional magnetic influence from the non-computing cell. In this
paper, we studied how the straightforward spin transfer torque (STT) can
induce a rotational coupling field between the non-computing and
computing cells to impair static interaction. This mechanism is also
better than spin orbital torque (SOT)-based reconfiguration in terms of
power, speed and system integration. Our study shows that STT-based
solution requires 14× less current desnsity and is 25% faster than the
SOT-based counterpart. We extended the study to achieve low-power
reconfiguration by altering the Gilbert damping. A lower damping can
further reduce 60% of the required current than the high damping case.
@ARTICLE{9448411,
author={Hoque, Arifa and Rajaram, Srinath and Bhanja, Sanjukta},
journal={IEEE Transactions on Nanotechnology},
title={A Study on Reconfigurable Nanomagnetic Array and Effect of Gilbert Damping on Reconfigurability},
year={2021},
volume={20},
number={},
pages={503-506},
doi={10.1109/TNANO.2021.3087590}}
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