Fermi-surface topology of the heavy-fermion system Ce${}_2$PtIn${}_8$

Abstract

Ce${}_2$PtIn${}_8$ is a recently discovered heavy-fermion system structurally related to the well-studied superconductor CeCoIn${}_5$. Here, we report on low-temperature de Haas-van Alphen-effect measurements in high magnetic fields in Ce${}_2$PtIn${}_8$ and Pr${}_2$PtIn${}_8$. In addition, we performed band-structure calculations for localized and itinerant Ce-$4f$ electrons in Ce${}_2$PtIn${}_8$. Comparison with the experimental data of Ce${}_2$PtIn${}_8$ and of the $4f$-localized Pr${}_2$PtIn${}_8$ suggests the itinerant character of the Ce-$4f$ electrons. This conclusion is further supported by the observation of effective masses in Ce${}_2$PtIn${}_8$, which are strongly enhanced with up to 26 bare electron masses.

arXiv comment10 pages, 12 figures

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Cited by in corpus (1)

• Quasi-two-dimensional Fermi surfaces of the antiferromagnet U${}_2$RhIn${}_8$ revealed by de Haas-van Alphen measurements