Fermi surface of CeIn3 above the Neel critical field

Details Fermi surface of CeIn3 above the Neel critical field Fermi surface of CeIn3 above the Neel critical field

2007-06-16

arxiv.org/abs/0706.2387v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages

Scientific paper

10.1103/PhysRevLett.99.056401

We report measurements of the de Haas-van Alphen effect in CeIn3 in magnetic fields extending to ~90 T, well above the Ne'el critical field of Hc ~61 T. The unreconstructed Fermi surface a-sheet is observed in the high magnetic field polarized paramagnetic limit, but with its effective mass and Fermi surface volume strongly reduced in size compared to that observed in the low magnetic field paramagnetic regime under pressure. The spheroidal topology of this sheet provides an ideal realization of the transformation from a `large Fermi surface' accommodating f-electrons to a `small Fermi surface' when the f-electron moments become polarized.

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