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Calculating the Bohr radius or velocity of an excitons

  1. Jan 7, 2010 #1
    while doing some calculations such as calculating the Bohr radius or velocity of an excitons in semiconductors such as GaAs I didnt understand why is it allowed to use the static permittivity even though the electron and hole aren't as heavy and the spectra is measured at high frequencies such as [tex]\omega=10^{15}Hz[/tex]?
     
  2. jcsd
  3. Jan 8, 2010 #2
    Re: Excitons

    anyone ???
     
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