Room-temperature demonstration of highly-functional single-hole transistor logic based on quantum mechanical effect

Novel highly-functional single-hole transistor (SHT) logic is proposed. An SHT is fabricated which shows Coulomb blockade and negative differential conductance (NDC) due to discrete quantum levels in the ultra-small dot at room temperature. By utilising gate-controllable NDC, exclusive-OR operation is successfully demonstrated in just one SHT at room temperature.