Field-induced quantum critical point in CeCoIn5

2003/04/22 by Johnpierre Paglione, M. A. Tanatar, D. G. Hawthorn +8
Materials Science · Mathematics · Physics and Astronomy · #Field (mathematics) #Iron-based superconductors research #Magnetic Properties of Alloys #Mathematics #Rare-earth and actinide compounds #cond-mat.str-el #cond-mat.supr-con

paper · pdf · doi:10.1016/j.physc.2004.03.120

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

arxiv created 2003/04/22 · openalex publication_date 2004/04/13 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

The resistivity of CeCoIn₅ 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=rho₀+AT² dependence. The field dependence of the T² 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.

Citations

• Heavy-fermion superconductivity in CeCoIn5at 2.3 K
• Response of the heavy-fermion superconductor CeCoIn5to pressure: roles of dimensionality and proximity to a quantum-critical point
• Magnetotransport in nearly antiferromagnetic metals
• Field-Induced Quantum Critical Point inCeCoIn5