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de Haas-van Alphen Effect Studies in CeCu<sub>6</sub>
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1987
Year
Charge ExcitationsEngineeringLow-dimensional MagnetismMagnetic ResonanceMagnetic MaterialsMagnetismElectron SpectroscopyQuantum MaterialsQuantum MatterAnisotropic Fermi SurfacePhysicsDhva EffectCondensed Matter TheorySolid-state PhysicCecu 6Quantum MagnetismSpintronicsNatural SciencesCondensed Matter PhysicsApplied Physics
We have investigated the dHvA effect in the “Kondo lattice” heavy-fermion compound, CeCu 6 , in magnetic fields of 4 to 13.6T and at temperatures between 20 and 500 mK. The results reveal a highly anisotropic Fermi surface with quasiparticle effective masses of 6–80m o . A differential scattering between up and down spin quasiparticles is detected. At low magnetic fields, < 4T, a structure is observed in the magnetic susceptibility which is not attributable to quantum oscillations. We believe this reflects changes in the density of states induced by the action of the magnetic field on the Abrikosov-Suhl resonance.