Pippard nonlocal theory
E48483
Pippard nonlocal theory is a refinement of superconductivity theory that introduces spatially nonlocal relations between current and electromagnetic fields to account for finite coherence length effects beyond the London model.
Aliases (1)
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
nonlocal electrodynamics theory
→
theory of superconductivity → |
| accountsFor |
deviation from local London electrodynamics
→
finite coherence length in superconductors → |
| addresses |
breakdown of local London theory when mean free path is large
→
|
| appliesTo |
clean superconductors
→
type-I superconductors → |
| basedOn |
BCS microscopic picture of Cooper pairs
→
|
| characterizedBy |
Pippard coherence length
→
|
| contrastsWith |
local London electrodynamics
→
|
| extends |
London local relation j ∝ A to a spatial integral over A
→
|
| field |
condensed matter physics
→
superconductivity → |
| influenced |
development of microscopic theories of superconducting electrodynamics
→
|
| introduces |
nonlocal relation between supercurrent and electromagnetic field
→
spatially nonlocal relation between current density and vector potential → |
| namedAfter |
A. B. Pippard
→
|
| precedes |
full microscopic BCS electrodynamics
→
|
| predicts |
modification of penetration depth in clean limit
→
nonlocal electromagnetic response in superconductors → |
| refines |
London equations
→
London theory of superconductivity → |
| relatedTo |
BCS theory
→
Ginzburg–Landau theory → London penetration depth → coherence length → |
| usedIn |
analysis of electromagnetic response of clean superconductors
→
interpretation of nonlocal effects in penetration depth measurements → |
| uses |
integral kernel relating current to vector potential
→
|
| validWhen |
electron mean free path is comparable to or larger than coherence length
→
|
Referenced by (2)
| Subject (surface form when different) | Predicate |
|---|---|
|
London equations
→
|
extendedBy |
|
Brian Pippard
("Pippard coherence length")
→
|
knownFor |