Recent content by E1982

YAY! I think we got it! Doesn't say V is constant, but mentions that V-E = 0.1 eV, so since that is a constant I'm taking that it's safe to assume that (V-E) = constant and therefore I can do the integral you showed above with no repercussions Nrged. I'm set! Thank you!

Thanks Malawi for all the help you offered! Wait a minute, shouldn't my limits of integration be the length of the barrier? I think it must... lol makes sense.

Another attempt at the equation |T^2| = e^{-2 \alpha x} dx where alpha = \sqrt{2m/h^2 * (V-E)} So final equation to use would be |T^2| = e^{-2 \int \sqrt{2m/h^2 * (V-E) }dx} This is the one I think! So now only question is what are my limits of integration? If I know that I'm set!

Yes exactly is it! My electron energy is 0.1 eV less than barrier height! If I ever figure out tex code I'll write out the equation.

Ah thanks for the clear up. Now the only problem I have is that I've not been given a value for E, I've only been told that E is 0.1 eV less than the height of the barrier. I'll see if I can cancel something out.

I'm doing this for an Intro to Nanotech class, we're going over Scanning Tunneling Microscopes. However there was no pre-requisite for a modern physics course, and my major does not require it! But one question... how does Transmission coefficient play in trying to find tunneling probability? I...

I have found some google references to tunneling probability, but nothing that gives you a step by step how to on solving problems. There is one site with a Javascript function that will calculate the probability for you but without telling you how they did it (I will need to show my work!). I...

Homework Statement There's two parts. Part A) Find the Probability than an electron will tunnel through a barrier if energy is 0.1 ev less than height of the barrier. Barrier is 1nm. Part B) Find tunneling probability if the barrier is widened to 3 nm.Homework Equations I believe relevant...