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

doi:10.1103/PhysRevB.92.155147

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

Strongly Correlated Electrons 2017-12-21 v2

Authors: 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, $\nu_{\alpha\alpha}$ , at the In(2) site exhibits a change of slope, $d\nu_{\alpha\alpha}/dP$ , at $P_{c1} = 1.75$ GPa. These changes to these coupling constants reflect alterations to the electronic structure at the quantum critical point.

Keywords

CeRhIn5 heavy fermion quantum critical point NMR Knight shift hyperfine coupling electric field gradient

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@article{arxiv.1507.05118,
  title  = {Evolution of hyperfine parameters across a quantum critical point in CeRhIn$_5$},
  author = {C. H. Lin and K. R. Shirer and J. Crocker and A. P. Dioguardi and M. M. Lawson and B. T. Bush and P. Klavins and N. J. Curro},
  journal= {arXiv preprint arXiv:1507.05118},
  year   = {2017}
}

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5 pages, 6 figures, to appear in Phys. Rev. B

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

Abstract

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