Field-Free Reconfigurable Spin Logic in Compositionally Graded MnxCoAl Layer
Researchers created a vertically graded MnxCoAl/Pt heterostructure to achieve field-free spin logic. They found that this gradient device exhibits deterministic switching and accumulative multistate behavior under zero external magnetic field, unlike uniform devices. This allows for the experimental realization of AND, OR, NAND, and NOR Boolean operations using current pulses without any external magnets.