Is the Fermi Surface Relevant for Metals with Band Structure?

aaaa202
Messages
1,144
Reaction score
2
Does this construction even make sense? By definition it is a surface of constant energy in k-space, so for the free electron it is a sphere. But for metals you have band structure so that a given k-vector can have several different energies associated with it.
Which of these are to be chosen?
 
Physics news on Phys.org
For free electrons (or for an approximation), choose the model for free electrons, otherwise don't choose that?
Electrons in metals see a potential structure, if this can be neglected or not depends on your problem.
 

Thread 'Stability of persistent currents in superconductors regardless of temperature'

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...
View full post »

Thread 'Instantaneous dipole moment and orbitals'

Hi. I have got question as in title. How can idea of instantaneous dipole moment for atoms like, for example hydrogen be consistent with idea of orbitals? At my level of knowledge London dispersion forces are derived taking into account Bohr model of atom. But we know today that this model is not correct. If it would be correct I understand that at each time electron is at some point at radius at some angle and there is dipole moment at this time from nucleus to electron at orbit. But how...
View full post »

Similar threads

A What can the Fermi surface tell us about a material's properties?
Replies
3
Views
3K
B Is the Fermi Level in Metals Crucial for Understanding Conductivity?
Replies
2
Views
5K
I Fe Lattice: Band Structure & Fermi Surface Location
Replies
1
Views
2K
A Electronic band structure of iron superconductor BaFe2As2
Replies
4
Views
3K
I The Mystery of the Fermi Surface & Semiconductors
Replies
1
Views
2K
I Does ARPES Only Show Fermi Surface of a Structure?
Replies
1
Views
1K
Relation between electronic band structure and Fermi energy
Replies
1
Views
2K
I Density of states at Fermi level for metal vs semiconductor
Replies
1
Views
5K
A Conductance of an interacting quasi one dimensional wire
Replies
2
Views
2K
A Thermal Properties of the Free Electron Gas: Fermi-Dirac Distribution
Replies
1
Views
4K

Hot Threads

Recent Insights

Back
Top