Diverting away from the monotony of charge-based paradigms, nanoelectronics looks towardnanomagnetics for help. CMOS logic is likely to become unacceptably energy inefficient below 10 nm gate length. QDCA-based logic too is confronted with the problem of allowing operation only at temperatures close to 0 K at the present technological competence. Nanomagnetics comes to rescue with a technology offering orders of magnitude lower heat dissipation than CMOS and capable of providing room-temperature operation. Nanomagnetic logic in the form of magnetic quantum cellular automata could serve as the holy grail of IC industry after CMOS has reached the end of the roadmap. This chapter highlights the limitations of CMOS and QDCA paradigms. Single-spin logic is introduced as a probable option. But the necessity of very cold environments for its deployment discourages us to tread this path. Then ferromagnetic dot-based logic is discussed and the actualization of magnetic quantum cellular automata (MQCA) through reconfigurable array of magnetic automata (RAMA) is treated.
KeywordsPower Dissipation Switching Energy CMOS Logic Small Electric Field Thin Film Array
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