Field-induced quantum critical point in CeCoIn_5

Johnpierre Paglione; M. A. Tanatar; D. G. Hawthorn; Etienne Boaknin; R. W. Hill; F. Ronning; M. Sutherland; Louis Taillefer; C. Petrovic; P. C. Canfield

doi:10.1016/j.physc.2004.03.120

Field-induced quantum critical point in CeCoIn_5

Superconductivity 2009-11-10 v1 Strongly Correlated Electrons

Authors: Johnpierre Paglione , M. A. Tanatar , D. G. Hawthorn , Etienne Boaknin , R. W. Hill , F. Ronning , M. Sutherland , Louis Taillefer , C. Petrovic , P. C. Canfield

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Abstract

The resistivity of CeCoIn_5 was measured down to 20 mK in magnetic fields of up to 16 T. With increasing field, we observe a suppression of the non-Fermi liquid behavior, rho~T, and the development of a Fermi liquid state, with its characteristic rho=rho_0+AT^2 dependence. The field dependence of the T^2 coefficient shows critical behavior with an exponent of ~4/3. This is evidence for a new field-induced quantum critical point, occuring in this case at a critical field which coincides with the superconducting upper critical field H_c2.

Keywords

quantum critical point

Cite

@article{arxiv.cond-mat/0304497,
  title  = {Field-induced quantum critical point in CeCoIn_5},
  author = {Johnpierre Paglione and M. A. Tanatar and D. G. Hawthorn and Etienne Boaknin and R. W. Hill and F. Ronning and M. Sutherland and Louis Taillefer and C. Petrovic and P. C. Canfield},
  journal= {arXiv preprint arXiv:cond-mat/0304497},
  year   = {2009}
}

Comments

2 pages, 2 figures, submitted to M2S-Rio 2003 Proceedings

Field-induced quantum critical point in CeCoIn_5

Abstract

Keywords

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