Peltier coefficient

[ams_nanolab]

In the tutorial https://quantumwise.com/documents/tutorials/latest/Phonon/index.html/chap.thermoelectric.html

It's mentioned "For an undoped nanoribbon, the Fermi level is in the middle of the band gap. To get a significant Peltier coefficient, the Fermi level must be at a band edge, corresponding to a doped nanoribbon. The plugin allows for shifting the Fermi level, and Figure 7 shows the result for \Delta E_F = 0.08 eV, corresponding to an n-doped nanoribbon. "

What happens if it is a metallic nanoribbon? Do we still need doping for getting significant Peltier coeff. even though there are states at Ef=0 ?

[Jess Wellendorff]

No, the doping is only needed to move the Fermi level to a band edge. Should not be needed for a metal.

[ams_nanolab]

Thanks