Coulomb Blockade & Single Electron Transistors Explained

[tianyi.tan]

Hello! Can someone please enlighten me about coulomb blockade & how its relevant to Single Electron Transistors? Thanks

 

[f95toli]

Try to find a copy of Tinkham's "Introduction to superconductivity", it is explained quite well in the chapter on small junctions.

 

[cmos]

http://en.wikipedia.org/wiki/Coulomb_blockade

The internet has become a wonderful resource in our enlightened age.

 

[per.sundqvist]

If you trap 1 electron in a dot between two leads ----o---- it will cause a repulsive potential barrier for another electron that could have been trapped there -to high, so it cannot be trapped -Its blocked by coulomb repulsion. To overcome this you lower the potential close to the dot with a gate electrode, and now the electron 2 could be trapped also. But the 3:d electron is blocked from the 2 electrons to be trapped, so you must lower the gate potential again, and so on.