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arXiv · 1507.05118

Evolution of hyperfine parameters across a quantum critical point in CeRhIn$_5$

C. H. Lin·K. R. Shirer·J. Crocker·A. P. Dioguardi·M. M. Lawson·B. T. Bush·P. Klavins·N. J. Curro
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Abstract

We report Nuclear Magnetic Resonance (NMR) data for both the In(1) and In(2) sites in the heavy fermion material CeRhIn$_5$ under hydrostatic pressure. The Knight shift data reveal a suppression of the hyperfine coupling to the In(1) site as a function of pressure, and the electric field gradient, $ν_{αα}$, at the In(2) site exhibits a change of slope, $dν_{αα}/dP$, at $P_{c1} = 1.75$ GPa. These changes to these coupling constants reflect alterations to the electronic structure at the quantum critical point.

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C. H. Lin, K. R. Shirer, J. Crocker, A. P. Dioguardi, M. M. Lawson, B. T. Bush, P. Klavins, N. J. Curro. 2015-10-16. Evolution of hyperfine parameters across a quantum critical point in CeRhIn$_5$. https://doi.org/10.1103/physrevb.92.155147

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