Abstract
A single n-channel junctionless nanowire transistor is fabricated and characterized for low-temperature quantum transport behavior. Transfer characteristics exhibit current oscillations below flat-band voltage $(V_{\rm FB})$ up to temperature 75 K, possibly due to cotunneling through unintentional quantum dots. Furthermore, regular current steps are observed above $V_{\rm FB}$ , that is, each current plateau corresponds to a fully populated subband. Experimental result of transconductance peaks indicates that the subband energy spacing in the 1-D channel agrees well with theoretical prediction.
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