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arXiv · 1101.0980

Four-state nanomagnetic logic using multiferroics

Noel D'Souza·Jayasimha Atulasimha·Supriyo Bandyopadhyay
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Abstract

The authors show how to implement a 4-state universal logic gate (NOR) using three strain-coupled magnetostrictive-piezoelectric multiferroic nanomagnets (e.g. Ni/PZT) with biaxial magnetocrystalline anisotropy. Two of the nanomagnets encode the 2-state input bits in their magnetization orientations and the third nanomagnet produces the output bit via dipole interaction with the input nanomagnets. A voltage pulse alternating between -0.2 V and +0.2 V is applied to the PZT layer of the third nanomagnet and generates alternating tensile and compressive stress in its Ni layer to produce the output bit, while dissipating ~ 57,000 kT (0.24 fJ) of energy per gate operation.

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Noel D'Souza, Jayasimha Atulasimha, Supriyo Bandyopadhyay. 2011-01-05. Four-state nanomagnetic logic using multiferroics. https://doi.org/10.1088/0022-3727/44/26/265001

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