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.

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Label Occurrences
Slichter–Hebel coherence peak canonical 1

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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 ⓘ

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Referenced by (1)

Full triples — surface form annotated when it differs from this entity's canonical label.

Charles P. Slichter → knownFor → Slichter–Hebel coherence peak ⓘ