“The electronics industry to date has relied largely on the control of charge flow through size scaling (i.e. reducing the physical size of elements such as transistors) to increase the performance of existing electronics…size scaling clearly cannot continue indefinitely as atomic length scales are reached, and new approaches must be developed. Basic research efforts…have shown that spin angular momentum, another fundamental property of the electron, can be used to store and process information in metal and semiconductor based devices…The realization of efficient electrical injection and significant spin polarization using a simple magnetic tunnel barrier compatible with “back-end” silicon processing should greatly facilitate development of silicon-based spintronic devices.” Full Slice

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