Fermi energy
E31548
Fermi energy is the highest occupied energy level of a system of fermions at absolute zero temperature, playing a central role in determining the electronic and thermal properties of metals and semiconductors.
Aliases (1)
- Fermi level ×3
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
physical quantity
→
quantum mechanical concept → thermodynamic quantity → |
| appliesTo |
fermions
→
|
| approximates |
chemical potential at low temperature
→
|
| assumes |
non-interacting or weakly interacting fermions in simple models
→
|
| characterizes |
degenerate Fermi gases
→
electronic properties of metals → electronic properties of semiconductors → |
| definedAt |
absolute zero temperature
→
|
| dependsOn |
confinement potential
→
dimensionality of the system → effective mass → particle density → |
| describes |
highest occupied energy level at T = 0 K
→
|
| determines |
Fermi temperature
→
|
| hasUnit |
electronvolt
→
joule → |
| importantFor |
band theory of solids
→
semiconductor doping analysis → thermal properties of electron gases → transport properties of electrons → understanding metallic conduction → |
| isEnergyOf |
Fermi surface
→
|
| isReferenceFor |
occupation probability of electronic states
→
position of bands relative to Fermi level → |
| isTypically |
a few electronvolts in simple metals
→
|
| namedAfter |
Enrico Fermi
→
|
| relatedTo |
Fermi level
→
Fermi momentum → Fermi wavevector → Fermi–Dirac statistics → chemical potential → |
| symbol |
E_F
→
|
| usedIn |
condensed matter physics
→
quantum statistics → solid-state physics → statistical mechanics → |
| usedInModel |
degenerate Fermi gas model
→
electron gas model → free electron model of metals → |
| usedToCalculate |
Pauli paramagnetism
→
degeneracy pressure → density of states at the Fermi level → electronic heat capacity in metals → screening length in metals → |
| variesWith |
carrier concentration in semiconductors
→
|
Referenced by (4)
| Subject (surface form when different) | Predicate |
|---|---|
|
Fermi–Dirac statistics
→
Fermi–Dirac statistics ("Fermi level") → |
relatedConcept |
|
Enrico Fermi
("Fermi level")
→
|
knownFor |
|
Fermi energy
("Fermi level")
→
|
relatedTo |