hw30902 - box are large, derive an expression for the...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
ECE G201 H.W. #3, Due February 10, 2009 Note: Most of these problems are very quick. The last two are more challenging! 1. 1.10, text. 2. 1.11, text. 3. 1.12, text. 4. 1.21, text. 5. 2.1, text. 6. 2.4, text. 7. 2.5, text. 8. 2.6, text. 9. 2.7, text. 10. 2.11, text. 11. 2.13, text. 12. 2.15, text 13. 2.18, text 14. 2.22, text 15. 2.26, text 16. 2.29, text. 17. 2.34, text. 18. 2.37, text. 19. 2.44, text 20. S1B.2, text 21. For silicon doped with Phosphorus at 10 14 cm -3 , at what temperature are half of the donors ionized. (This is easier than it appears!) 22. A particle of mass ma and fixed energy E is confined to a two-dimensional infinite potential well, as discussed in class. The x and y side lengths of the well are a and b (or Lx and Ly or . ..), respectively. Also, the potential energy, Ep, is constant everywhere inside the well. Assuming the side-lengths of the
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: box are large, derive an expression for the density of states (S(E)) for the particle. This problem is covered both in Pierret and in our text, Appendix D. 23. (4.3, Pierret - reference) Link Here a, b, and c are equivalent to Lx, Ly, and Lz in our text. Part a is refering to the form of the solution for the energy levels (and wavefunctions) for this problem - is it the same here or different? Obviously the numbers are different, but is the form of the equations the same? Part b. is referring to how you would count the solutions up. This will be a hybrid of the 2-D and 3-D solutions. In d. the idea is to plot both the 3-D and the "2.5-D" solutions on the same axes for comparison. What you should see is that the 2.5-D result will approach the 3-D result as the third dimension (c or Lz) increases....
View Full Document

Page1 / 2

hw30902 - box are large, derive an expression for the...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online