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Type: Artigo de periódico
Title: Superconducting Quantum Critical Point in CeCoIn5-xSnx
Author: Ramos, SM
Fontes, MB
Hering, EN
Continentino, MA
Baggio-Saitovich, E
Neto, FD
Bittar, EM
Pagliuso, PG
Bauer, ED
Sarrao, JL
Thompson, JD
Abstract: We report a combined pressure-doping study in the nearly two-dimensional heavy fermion superconductor CeCoIn5 as its superconducting phase is driven to the normal state by Sn doping and/or applied pressure. Temperature-pressure-dependent electrical resistivity measurements were performed at the vicinity of a superconducting quantum critical point where T-c -> 0. A universal plot of the concentration- and pressure-dependent phase diagram suggests that for the concentrations studied a single mechanism is responsible for reducing T-c and bringing the system to the superconducting quantum critical point. A two-band model with hybridization controlled by pressure and doping provides a consistent description of the phase diagram and the suppression of the d-wave superconductivity in this material.
Country: EUA
Editor: Amer Physical Soc
Citation: Physical Review Letters. Amer Physical Soc, v. 105, n. 12, 2010.
Rights: aberto
Identifier DOI: 10.1103/PhysRevLett.105.126401
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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