Slichter–Hebel coherence peak
E662214
The Slichter–Hebel coherence peak is a characteristic enhancement in nuclear spin-lattice relaxation just below the superconducting transition temperature, providing key experimental evidence for conventional BCS superconductivity.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Slichter–Hebel coherence peak canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7399986 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
Target entity: Slichter–Hebel coherence peak Context triple: [Charles P. Slichter, knownFor, Slichter–Hebel coherence peak]
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A.
Landau–Peierls instability
Landau–Peierls instability is a theoretical prediction in condensed matter physics that shows how long-wavelength thermal fluctuations destroy true long-range positional order in low-dimensional crystalline systems.
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B.
Shubnikov–de Haas effect
The Shubnikov–de Haas effect is a quantum oscillatory phenomenon in the electrical resistance of conductors and semiconductors subjected to strong magnetic fields at low temperatures, used to probe their electronic structure and Fermi surface.
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C.
de Haas–van Alphen effect
The de Haas–van Alphen effect is a quantum oscillatory phenomenon in metals where the magnetization varies periodically with applied magnetic field, allowing precise mapping of the electronic structure and Fermi surface.
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D.
Szilard–Chalmers effect
The Szilard–Chalmers effect is a nuclear chemistry phenomenon in which atoms that undergo neutron capture and become radioactive are chemically separated from their original, non-activated atoms due to recoil-induced disruption of their chemical bonds.
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E.
Segré–Silberberg effect
The Segré–Silberberg effect is a fluid dynamics phenomenon in which particles suspended in laminar flow through a circular tube migrate to stable equilibrium positions at a characteristic radial distance from the tube wall.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Target entity: Slichter–Hebel coherence peak Target entity description: The Slichter–Hebel coherence peak is a characteristic enhancement in nuclear spin-lattice relaxation just below the superconducting transition temperature, providing key experimental evidence for conventional BCS superconductivity.
-
A.
Landau–Peierls instability
Landau–Peierls instability is a theoretical prediction in condensed matter physics that shows how long-wavelength thermal fluctuations destroy true long-range positional order in low-dimensional crystalline systems.
-
B.
Shubnikov–de Haas effect
The Shubnikov–de Haas effect is a quantum oscillatory phenomenon in the electrical resistance of conductors and semiconductors subjected to strong magnetic fields at low temperatures, used to probe their electronic structure and Fermi surface.
-
C.
de Haas–van Alphen effect
The de Haas–van Alphen effect is a quantum oscillatory phenomenon in metals where the magnetization varies periodically with applied magnetic field, allowing precise mapping of the electronic structure and Fermi surface.
-
D.
Szilard–Chalmers effect
The Szilard–Chalmers effect is a nuclear chemistry phenomenon in which atoms that undergo neutron capture and become radioactive are chemically separated from their original, non-activated atoms due to recoil-induced disruption of their chemical bonds.
-
E.
Segré–Silberberg effect
The Segré–Silberberg effect is a fluid dynamics phenomenon in which particles suspended in laminar flow through a circular tube migrate to stable equilibrium positions at a characteristic radial distance from the tube wall.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
nuclear magnetic resonance effect
ⓘ
physical phenomenon ⓘ superconductivity phenomenon ⓘ |
| absentIn | many unconventional superconductors ⓘ |
| appearsIn | temperature dependence of nuclear spin-lattice relaxation ⓘ |
| characteristicOf |
BCS superconductors
ⓘ
conventional superconductors ⓘ |
| contrastsWith | monotonic decrease of 1/T1 expected without coherence factors ⓘ |
| dependsOn |
density of states near the gap edge
ⓘ
superconducting energy gap ⓘ |
| energyScale | set by the superconducting gap magnitude ⓘ |
| field |
condensed matter physics
ⓘ
nuclear magnetic resonance ⓘ superconductivity ⓘ |
| firstObservedIn | conventional low-Tc superconductors ⓘ |
| firstReportedBy |
Charles P. Slichter
NERFINISHED
ⓘ
Leonard C. Hebel NERFINISHED ⓘ |
| historicalSignificance | early experimental confirmation of BCS superconductivity ⓘ |
| indicates | opening of a superconducting energy gap with coherence effects ⓘ |
| mathematicallyDescribedBy | BCS relaxation-rate formulas including coherence factors ⓘ |
| measurementTechnique |
nuclear magnetic resonance
ⓘ
nuclear quadrupole resonance ⓘ |
| namedAfter |
Charles P. Slichter
NERFINISHED
ⓘ
Leonard C. Hebel NERFINISHED ⓘ |
| observedIn | NMR experiments on superconducting metals ⓘ |
| occursIn | superconducting state ⓘ |
| occursJustBelow | critical temperature Tc ⓘ |
| occursNear | superconducting transition temperature ⓘ |
| providesEvidenceFor |
BCS theory of superconductivity
NERFINISHED
ⓘ
isotropic s-wave pairing ⓘ |
| relatedTo |
1/T1 relaxation rate
ⓘ
nuclear spin-lattice relaxation rate ⓘ |
| relevantTo | electron-phonon mediated superconductivity ⓘ |
| sensitiveTo |
gap anisotropy
ⓘ
magnetic field ⓘ quasiparticle lifetime broadening ⓘ spin-orbit scattering ⓘ |
| signature | enhancement of 1/T1 below Tc relative to normal-state extrapolation ⓘ |
| suppressedBy |
anisotropic or nodal gaps
ⓘ
magnetic impurities ⓘ strong electron correlations ⓘ strong impurity scattering ⓘ |
| temperatureDependence | appears just below Tc and decreases at lower temperatures ⓘ |
| theoreticalBasis |
BCS coherence factors
ⓘ
BCS quasiparticle excitations ⓘ |
| usedAs |
diagnostic of pairing symmetry
ⓘ
test of BCS coherence factors ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Subject: Slichter–Hebel coherence peak Description of subject: The Slichter–Hebel coherence peak is a characteristic enhancement in nuclear spin-lattice relaxation just below the superconducting transition temperature, providing key experimental evidence for conventional BCS superconductivity.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.