Patent ID: 8248146
Filing Date: 2012-08-21
Classification: H01L

Abstract:
1. A semiconductor circuit comprising: a power supply voltage generation circuit; a second circuit comprising a transistor that is connected to the power supply voltage generation circuit, and that is capable of varying a drain threshold value, which is a drain-source voltage where a drain current starts flowing, by utilizing a degree of freedom of an electron spin to vary at least one of a spin state of a source and a spin state of a drain; and a main function circuit that comprises a main function and operates according to a drain current output from said second circuit, wherein an on-off state of the drain current for operating the main function circuit is determined based on a magnitude relation between the drain threshold value for the drain-source voltage of the transistor which is varied by varying said spin state and by varying a drain-source voltage applied to the transistor by the power supply voltage generation circuit, and a magnitude relation between a gate threshold value for a gate voltage of the transistor and a gate voltage applied to a gate of the transistor.