- #1

- 2

- 0

- Thread starter AIHUNTER
- Start date

- #1

- 2

- 0

- #2

nasu

Gold Member

- 3,772

- 429

The free electron concentration is not proportional to the Fermi level.

In the free electron approximation the Fermi energy goes like n^(2/3) where n is the free electron concentration.

n for sodium is about 2.65 and for Cs about 0.91 (from Ascroft and Mermin) . In same units, 10^22/cm^3, for example.

If you take the ratio of the concentrations and raise it to power 2/3 you get 2 Much better that I expected to work. :)

- #3

- 2

- 0

Thanks nasu :)

The free electron concentration is not proportional to the Fermi level.

In the free electron approximation the Fermi energy goes like n^(2/3) where n is the free electron concentration.

n for sodium is about 2.65 and for Cs about 0.91 (from Ascroft and Mermin) . In same units, 10^22/cm^3, for example.

If you take the ratio of the concentrations and raise it to power 2/3 you get 2 Much better that I expected to work. :)

- Replies
- 0

- Views
- 8K

- Last Post

- Replies
- 2

- Views
- 3K

- Last Post

- Replies
- 1

- Views
- 2K

- Last Post

- Replies
- 2

- Views
- 1K

- Replies
- 21

- Views
- 76K

- Replies
- 0

- Views
- 5K

- Replies
- 4

- Views
- 3K

- Last Post

- Replies
- 10

- Views
- 8K

- Last Post

- Replies
- 3

- Views
- 5K

- Last Post

- Replies
- 3

- Views
- 2K