基于单电子器件的电流反射镜

Applied Superconductivity Pub Date : 1999-10-01 DOI:10.1016/S0964-1807(99)00043-5

P. Delsing, D.B. Haviland

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引用次数: 4

摘要

我们已经制造了库仑封锁装置，作为电流反射镜。每个样品由两个名义上相同的小隧道结的一维阵列组成。一个阵列的每个电极电容耦合到另一个阵列中的两个电极。通过同时测量两个阵列的电流电压特性，我们观察到两个阵列中的电流之间存在耦合。我们研究了超导状态和正常状态下的性质，并根据两种阵列中电荷的相关输运来解释数据。两个阵列中电流之间的锁定在中间磁场中是最强的，那里的电极仍然是超导的。在最好的情况下，我们发现电流锁定范围为±6.7 pA

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A current mirror based on single electron devices

We have fabricated Coulomb blockade devices which act as current mirrors. Each sample consists of two nominally identical one-dimensional arrays of small tunnel junctions. Each electrode of one array is capacitively coupled to two electrodes in the other array. By measuring the current voltage characteristics of the two arrays simultaneously, we observe a coupling between the currents in the two arrays. We have studied the properties both in the superconducting state and in the normal state, and we interpret the data in terms of correlated transport of charges in the two arrays. The locking between the currents in the two arrays is strongest for intermediate magnetic fields where the electrodes are still superconducting. At best we find current locking over a range of ±6.7 pA

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Applied Superconductivity

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