Observation of Quantum Capacitance in the Cooper-Pair Transistor
Observation of Quantum Capacitance in the Cooper-Pair Transistor
We have fabricated a Cooper-pair transistor (CPT) with parameters such that for appropriate voltage biases, it behaves essentially like a single Cooper-pair box (SCB). The effective capacitance of a SCB can be defined as the derivative of the induced charge with respect to gate voltage and has two parts, the …