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Coulomb blockade

  1. May 27, 2008 #1
    Hello! Can someone please enlighten me about coulomb blockade & how its relevant to Single Electron Transistors? Thanks :))
  2. jcsd
  3. May 27, 2008 #2


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    Try to find a copy of Tinkham's "Introduction to superconductivity", it is explained quite well in the chapter on small junctions.
  4. Jun 9, 2008 #3
  5. Jun 24, 2008 #4
    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.
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