We propose and numerically analyze novel reconfigurable logic gates using"single-electron spin transistors" (SESTs), which are single-electrontransistors (SETs) with ferromagnetic electrodes and islands. The outputcharacteristics of a SEST depend on the relative magnetization configuration ofthe ferromagnetic island with respect to the magnetization of the source andthe drain, i.e., high current drive capability in parallel magnetization andlow current drive capability in antiparallel magnetization. The summation ofmultiple input signals can be achieved by directly coupling multiple input gateelectrodes to the SEST island, without using a floating gate. A Tucker-typeinverter with a variable threshold voltage, a reconfigurable AND/OR logic gate,and a reconfigurable logic gate for all symmetric Boolean functions areproposed and simulated using the Monte Carlo method.
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