The de Haas-van Alphen effect across the metamagnetic transition in Sr$_3$Ru$_2$O$_7$

Preprint

16 March 2004

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0403390

Abstract

We report a study of the de Haas-van Alphen (dHvA) effect on the itinerant metamagnet Sr$_3$Ru$_2$O$_7$. Extremely high sample purity allows the observation of dHvA oscillations both above and below the metamagnetic transition field of 7.9 T. The quasiparticle masses are fairly large away from the transition, and are enhanced by up to an extra factor of three as the transition is approached, but the Fermi surface topography change is quite small. The results are qualitatively consistent with a field-induced Stoner transition in which the mass enhancement is the result of critical fluctuations.

Keywords

METAMAGNETIC TRANSITION
HAAS VAN ALPHEN
ALPHEN EFFECT
VAN ALPHEN
TOPOGRAPHY

All Related Versions

Version 1, 2004-03-16, ArXiv
Published version: Physical Review Letters, 92 (21), 216403.

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