Cotunneling in single-electron devices: Effects of stray capacitances
Document Type
Article
Publication Date
1-1-1996
Abstract
An analytic treatment of the effects of stray capacitances on cotunneling in single-electron devices with equal junction capacitances is presented. By using analytical forms of the Gibbs free energy and by extending the Jensen-Martinis approximation [Phys. Rev. B 46, 13 407 (1992)], we have calculated the threshold voltages and currents for cotunneling in one-dimensional arrays, single-electron traps, and single-electron turnstiles. Our results show that the main effect of the stray capacitances on the cotunneling is to reduce the threshold voltages, whereas it has very little effect on the magnitude of the tunneling current. In general, when the stray capacitances increase, the current-voltage curve of the single-electron device is shifted towards the low-voltage side. The relevance of our theoretical results to some experiments are also discussed. © 1996 The American Physical Society.
Publication Source (Journal or Book title)
Physical Review B - Condensed Matter and Materials Physics
First Page
14560
Last Page
14565
Recommended Citation
Hu, G., & O’Connell, R. (1996). Cotunneling in single-electron devices: Effects of stray capacitances. Physical Review B - Condensed Matter and Materials Physics, 54 (20), 14560-14565. https://doi.org/10.1103/PhysRevB.54.14560