Abstract
A unique feature of the extremely long-range-extended blockade regime with its shape of a long stick, where the Coulomb blockade oscillation and negative differential conductance peak-positions can be systematically and precisely modulated for both extremely-wide VG and VD ranges, was clearly observed in a room-temperature-operating silicon single hole transistor. These results originate from the large quantum level spacing, large tunnel-barrier height, small tunnel-barrier curvature, small bias-induced barrier modulation, and large voltage gain, attributing to the formation of an ultrasmall dot in the gently sloped tunnel barriers along the [100] Si nanowire channel having the large subband modulation.
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