Observation of the magnetic field dependence of the cyclotron mass in the Kondo lattice cerium boride (CeB6)

W. Joss, J.M. Ruitenbeek, van, G.W. Crabtree, J.L. Tholence, A.P.J. Deursen, van, Z. Fisk

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Abstract

Low-temperature, high-field deHaas–van Alphen measurements are presented which show that the conduction-electron mass in the Kondo lattice CeB6 decreases strongly with field. This field dependence is consistent with recent specific-heat results. The geometry of the Fermi surface does not depend on field. Thus we observe a reduction in the many-body enhancement of the electronic density of states at the Fermi energy which is described by a change of the itinerant-electron mass alone; the number of particles and the occupation of states in k space remain unchanged. We argue that CeB6 represents a different limit of heavy-fermion behavior as compared to UPt3.
Original languageEnglish
Pages (from-to)1609-1612
Number of pages4
JournalPhysical Review Letters
Volume59
Issue number14
DOIs
Publication statusPublished - 1987

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