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Negative differential resistance due to single-electron switching

C. P. Heij, D. C. Dixon, P. Hadley, J. E. Mooij

cond-mat.mes-hallarXiv:cond-mat/9809272

Abstract

We present the multilevel fabrication and measurement of a Coulomb-blockade device displaying tunable negative differential resistance (NDR). Applications for devices displaying NDR include amplification, logic, and memory circuits. Our device consists of two Al/AlxOy islands that are strongly coupled by an overlap capacitor. Our measurements agree excellently with a model based on the orthodox theory of single-electron transport.

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