Fermi Surface Properties of Low Concentration Ce${}_x$La${}_{1-x}$B${}_6$: dHvA

Abstract

The de Haas-van Alphen effect is used to study angular dependent extremal areas of the Fermi Surfaces (FS) and effective masses of Ce${}_x$La${}_{1-x}$B alloys for $x$ between 0 and 0.05. The FS of these alloys was previously observed to be spin polarized at low Ce concentration ($x$ = 0.05). This work gives the details of the initial development of the topology and spin polarization of the FS from that of unpolarized metallic LaB${}_6$ to that of spin polarized heavy Fermion CeB${}_6$ .

7 pages, 9 figures, submitted to PRB