Modern Physics

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cncnl

Science

Description

I have this assignment in modern physics chapter 10 from this book (http://phy240.ahepl.org/ModPhy-Serway.pdf) Look for The Fermi Energy. Page 360 is helpful from Pdf file. all you need you can find in chapter 10.

I have attached the question. Moreover, there are important things you need to follow:

1- A print-out of the two graphs the table along with answers to parts (d) and (e). you can do them on Excel. attache the excel sheet with the final answer and I will print them out.

2- The temperatures indicated in color, bold font and italics(0,100,1000,2000 and 10,000) must be clearly identified on both the graph. you may use the same or different colors, or different line types. Other ways of delineating the temperatures are also acceptable as long as these can be deciphered on your graph.

3- The data and graphs must be computer- generated ( you may use Excel, Matlab, Sigmaplot, or Mathematica) . The graphs must have appropriate axis labels. I will be happy with Excel. However, I need a really corrected answer for that.

I need your answer, do not forget units.

Unformatted Attachment Preview

(a) Compute the Fermi-Dirac distribution function for Copper (Fermi Energy =7.05eV), in the energy range 0 to 20 eV, for temperatures OK,100K, 200K, 500K, 700 K, 1000K, 2000K, 5000K,7000K and 10,000K. Plot your results on a single graph. [The temperatures indicated in color, bold font and italics(0,100,1000,2000 and 10,000) must be clearly identified on both the graphs). (b) Zoom (i.e expand) the x-scale of the above graph from 6eV to 8 eV, and create a second plot. (c) Make a table listing the following quantities: T, koT and keT/EF. (d) Comment on how the behavior of the graph in (b) changes (relative to the behavior at TOK), as temperature increases. (e) What is the value of T and kpT/Er where there is noticeable probability that the energy levels above the Fermi energy are occupied? [1 realize noticeable is a subjective term, and will be keeping that in mind while grading).
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Explanation & Answer

here is solution; kindly ask if any question.

Modern Physics
a)
1.2

1

0.8

100K
200K
500K

0.6

700K

f(ε)

1000K

0.4

2000K
5000K

0.2

7000K
10000K

0
0
-0.2

5

10

15

E

20

25

b)
1.2

100K

1

200K
500K
700K

0.8

1000K
2000K
5000K

0.6

7000K
10000K

f(ε)

100K
200K

0.4

500K
700K
1000K

0.2

2000K
5000K
7000K

0

10000K
6

-0.2

6.5

7

E

7....


Anonymous
Very useful material for studying!

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