Abstract
Coulomb blockade of single-electron tunneling and high sensitivity to an external electric field has been observed for 1D series arrays of ultra-small-area (<0.1×0.1 μ) tunnel junctions, made of Al//Al, at helium temperatures. In particular, the dc voltage V across the array responds strongly to a voltage applied to a control electrode. For an array of thirteen junctions, the voltage gain =‖δV/δ‖ of the resulting sub-single-electron- transistors reached 0.2, while the charge sensitivity of the device was as high as 2×e/ at a frequency f=10 Hz.
- Received 28 December 1988
DOI:https://doi.org/10.1103/PhysRevLett.62.2539
©1989 American Physical Society