Module 7 : Coulomb blockade and single electron tunneling
Lecture 1 : Coulomb blockade and single electron tunneling
These imply so that the tunneling condition is given by
and no current can flow at a bias below a threshold voltage which depends on the temperature. At
T = 0, no current below V = e / (2C), which region is called the coulomb. The prohibition of tunneling is called coulomb blockade. The energy eV = e2 / (2C) is called the coulomb gap energy and will be denoted by Ec.
Fig. 8.4 : I-V characteristic illustrating Coulomb gap
so that the tunneling condition is given by
