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26 April 2024

» pubmed » pmid17930772

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Fermi surface of CeIn3 above the Néel critical field
N Harrison ; S E Sebastian ; C H Mielke ; A Paris ; M J Gordon ; C A Swenson ; D G Rickel ; M D Pacheco ; P F Ruminer ; J B Schillig ; J R Sims ; A H Lacerda ; M-T Suzuki ; H Harima ; T Ebihara ;
Date:	3 Aug 2007
Journal:	Phys Rev Lett, 99 (5), 056401
Abstract:	We report measurements of the de Haas-van Alphen effect in CeIn(3) in magnetic fields extending to approximately 90 T, well above the Néel critical field of mu(0)H(c) approximately 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.
Source:	PubMed, pmid17930772
Other source:	[GID 1103248] arxiv.0706.2387
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