London equations
E8659
The London equations are fundamental relations in superconductivity that describe how magnetic fields behave inside superconductors, capturing key features like the Meissner effect and zero electrical resistance.
Observed surface forms (2)
| Surface form | Occurrences |
|---|---|
| London equations describing superconductivity | 1 |
| London equations of superconductivity | 1 |
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
set of equations
ⓘ
theoretical model in superconductivity ⓘ |
| alsoKnownAs | London theory ⓘ |
| appliesTo | bulk superconductors ⓘ |
| approximates | low-frequency response of superconductors ⓘ |
| assumes |
constant density of superconducting carriers
ⓘ
rigid macroscopic quantum phase of superconducting wavefunction ⓘ superconducting carriers move without scattering ⓘ |
| captures | zero electrical resistance in superconductors ⓘ |
| category | electrodynamics of superconductors ⓘ |
| consistsOf |
first London equation
ⓘ
second London equation ⓘ |
| describes |
behavior of magnetic fields in superconductors
ⓘ
electromagnetic response of superconductors ⓘ |
| explains |
Meissner effect
ⓘ
perfect diamagnetism of superconductors ⓘ |
| extendedBy | Pippard nonlocal theory ⓘ |
| field | superconductivity ⓘ |
| formulatedBy |
Fritz London
ⓘ
Heinz London ⓘ |
| frameworkFor | understanding London penetration depth measurements ⓘ |
| implies | exponential decay of magnetic field inside a superconductor ⓘ |
| inspiredBy |
Meissner effect
ⓘ
surface form:
Meissner–Ochsenfeld experiment
|
| introduces | London penetration depth ⓘ |
| mathematicallyExpressedAs |
supercurrent proportional to vector potential
ⓘ
time derivative of supercurrent proportional to electric field ⓘ |
| namedAfter |
Fritz London
ⓘ
Heinz London ⓘ |
| neglects | nonlocal electrodynamic effects ⓘ |
| precedes |
BCS theory of superconductivity
ⓘ
surface form:
BCS theory
|
| predicts |
finite penetration depth of magnetic fields in superconductors
ⓘ
surface screening currents in superconductors ⓘ |
| relatedTo |
Ginzburg–Landau theory of superconductivity
ⓘ
surface form:
Ginzburg–Landau theory
|
| relates |
superconducting carrier density to penetration depth
ⓘ
supercurrent density to electromagnetic fields ⓘ |
| usedIn |
analysis of magnetic field screening
ⓘ
analysis of type I superconductors ⓘ derivation of flux expulsion in superconductors ⓘ design of superconducting magnets ⓘ modeling of superconducting shielding ⓘ phenomenological description of superconductors ⓘ |
| validFor | local electrodynamics of superconductors ⓘ |
| yearProposed | 1935 ⓘ |
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
London equations of superconductivity
this entity surface form:
London equations describing superconductivity