Purchase Solution

Electron tunnel effect through potential barrier

Not what you're looking for?

Ask Custom Question

An electron with E= 1.2 eV has a probability of 10^-4 for tunneling through a potential barrier with a height of 2.4 eV.
What is the width of the potential barrier?

Purchase this Solution

Solution Summary

This problem of determination of the width of the potential barrier is solved using the concept of transmission probability.

Solution Preview

The transmission probability of an electron with energy E through a potential barrier U is given by the relation :
_____
T = e-2{[√2m(U-E)]/ħ} L ................(1)

Where,

T = Transmission probability through the barrier = 10-4
m = Mass of ...

Purchase this Solution


Free BrainMass Quizzes
Variables in Science Experiments

How well do you understand variables? Test your knowledge of independent (manipulated), dependent (responding), and controlled variables with this 10 question quiz.

Intro to the Physics Waves

Some short-answer questions involving the basic vocabulary of string, sound, and water waves.

The Moon

Test your knowledge of moon phases and movement.

Introduction to Nanotechnology/Nanomaterials

This quiz is for any area of science. Test yourself to see what knowledge of nanotechnology you have. This content will also make you familiar with basic concepts of nanotechnology.

Basic Physics

This quiz will test your knowledge about basic Physics.