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- Thread starter luke
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Dr Transport

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do a google search under silver plasma frequency......

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Thanks again

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The plasma frequency of silver is 2.17 *10^15 Hz or 138 nm. This is calculated from the equation plasma frequency = sqrt(4*pi*N*e^2/m_0), where N is the number of electrons per cm^3, e = 4.8E-10 esu, m_0 is the electron mass m_o=9.11E-28 grams. The plasma frequency will be in Hertz or 1/sec.

Tau is the momentum scattering time. A good explanation is in Mark Fox's book "Optical Properties of Solids".

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Brilliant! A simple yet effective way to find the answer to everything!do a google search under silver plasma frequency......

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reference:

1. Phys. Rev. 132, 1599 - 1602 (1963)

2. Phys. Rev. Lett. 5, 470 - 472 (1960)

I try to use the formula suggested by Marcie, using n=5.86*10^22 (cm^-3) (from the book by Ashcroft) and I get 8.99(eV).

Well, I hope someone can tell me why the formula doesn't work. I found an article saying that there is a reflection minimum at 9.2(eV). See :Phys. Rev. 121, 1100 - 1103 (1961). I am not sure if the 9.2 eV has anything to do with the calculated 8.99eV.

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For pure SIlver it will be the value you calculated. But for doped Silver which is a semiconductor its value is nearly 9 ev.

I need plasma frequency for all the doped semiconductor for my research. My question is

1) Is there a range for maximum and minimum doping of a semiconductor?

2) Plasma fy= sqrt(4piNe^2/m0); Is N the doping concentration in case of doped semiconductor?

3) how to convert frequency in Hertz to ev?

Kindly reply

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Thank you for wasting my time. My unrelated google search for 'Plasma frequency of silver' has this discussion as the first hit. Your useless reply has contributed in destroying the internet. Good job.do a google search under silver plasma frequency......

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