A Understand Electronic Dispersion: Definition & Examples

nouha
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I am not being able to understand what is the electronic dispersion exactly, I have came across it in few papers and I haven't find any resource that explained it clearly and simply.
I am not being able to understand what is the electronic dispersion exactly, I have came across it in few papers and I haven't find any resource that explained it clearly and simply.
I've came across 'the electronic dispersion is linear' and 'electronic dispersion is parabolic' and some graphs about it but I still didn't understand what is this electronic dispersion exactly, how do we get it and why it is so important
 
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nouha said:
I've came across 'the electronic dispersion is linear' and 'electronic dispersion is parabolic'
Sound like it is just the dispersion relation (formula that expresses frequency as a function of wave vector ##k##) for electrons.
 
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From the BCS theory of superconductivity is well known that the superfluid density smoothly decreases with increasing temperature. Annihilated superfluid carriers become normal and lose their momenta on lattice atoms. So if we induce a persistent supercurrent in a ring below Tc and after that slowly increase the temperature, we must observe a decrease in the actual supercurrent, because the density of electron pairs and total supercurrent momentum decrease. However, this supercurrent...

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