Non-Fermi Liquid behavior in CeIrIn$_5$ near a metamagnetic transition

Details Non-Fermi Liquid behavior in CeIrIn$_5$ near a metamagnetic transition Non-Fermi Liquid behavior in CeIrIn$_5$ near a metamagnetic transition

2004-04-14

arxiv.org/abs/cond-mat/0404333v1

Phys. Rev. B 70, 180502 (2004)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 4 figures, submitted to Phys. Rev. Letters

Scientific paper

10.1103/PhysRevB.70.180502

We present specific heat and resistivity study of CeIrIn5 in magnetic fields up to 17 T and temperature down to 50 mK. Both quantities were measured with the magnetic field parallel to the c-axis (H || [001]) and within the a-b plane (H \perp [001]). Non-Fermi-liquid (NFL) behavior develops above 12 T for H || [001]. The Fermi liquid state is much more robust for H \perp [001] and is suppressed only moderately at the highest applied field. Based on the observed trends and the proximity to a metamagnetic phase transition, which exists at fields above 25 T for H || [001], we suggest that the observed NFL behavior in CeIrIn5 is a consequence of a metamagnetic quantum critical point.

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