Open AccessImpact of nanomagnets size on switching behaviour of all spin logic devices
Author(s) -
Wang Sen,
Cai Li,
Qi Kai,
Yang Xiaokuo,
Feng Chaowen,
Cui Huanqing
Publication year - 2016
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2016.0163
Subject(s) - nanomagnet , permalloy , dissipation , materials science , condensed matter physics , energy (signal processing) , scaling , thermal management of electronic devices and systems , optoelectronics , physics , engineering , magnetic field , quantum mechanics , mechanical engineering , geometry , magnetization , mathematics
Under different nanomagnets’ size, switching behaviour of all spin logic (ASL) devices constructed with Co and permalloy (Py) nanomagnets are studied by using the coupled spin‐transport/magneto‐dynamics model. The results indicate that ASL devices’ switching delay and energy dissipation can be reduced by decreasing the thickness of nanomagnets. The switching delay and energy dissipation of PyASL are lower than those of CoASL in a smaller thickness of nanomagnet, but they increase much faster than those of CoASL when the nanomagnets (FM) thickness increases. With the dimensional scaling of nanomagnets, the ASL devices’ switching delay and energy dissipation decrease rapidly and the influence of thermal noise become weak. Moreover, under the same nanomagnet volume, ASL devices’ switching delay, energy dissipation, and energy barrier can be reduced by decreasing aspect ratio. These findings can provide guidelines for optimising the ASL devices’ materials and size.