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Suppression of Hidden Order and Emergence of Ferromagnetism in URu2-xRexSi2

Published online by Cambridge University Press:  01 February 2011

Nicholas P. Butch ,
Todd A. Sayles ,
Benjamin T. Yukich  and
M. Brian Maple
Nicholas P. Butch
Affiliation:
nbutch@physics.ucsd.edu, University of California, San Diego, Department of Physics and Institute for Pure and Applied Physical Sciences, 9500 Gilman Drive, La Jolla, CA, 92093, United States
Todd A. Sayles
Affiliation:
tsayles@physics.ucsd.edu, University of California, San Diego, Department of Physics and Institute for Pure and Applied Physical Sciences, 9500 Gilman Drive, La Jolla, CA, 92093, United States
Benjamin T. Yukich
Affiliation:
nbutch@physics.ucsd.edu, University of California, San Diego, Department of Physics and Institute for Pure and Applied Physical Sciences, 9500 Gilman Drive, La Jolla, CA, 92093, United States
M. Brian Maple
Affiliation:
mbmaple@physics.ucsd.edu, University of California, San Diego, Department of Physics and Institute for Pure and Applied Physical Sciences, 9500 Gilman Drive, La Jolla, CA, 92093, United States
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Abstract

Measurements on URu2-xRexSi2 single crystals indicate that substitution of Re for Ru in URu2Si2 reduces the transition temperature of the hidden order state and quickly destroys superconductivity. At intermediate Re concentrations, weak ferromagnetism emerges and non Fermi liquid (NFL) behavior is observed in the low-temperature specific heat and electrical resistivity. A scaled Arrott analysis of the magnetization indicates the onset of ferromagnetism at x =0.15, where the hidden order disappears, and that the quantum phase transition is associated with novel critical exponents.

Keywords

actinidemagnetic propertiesferromagnetic
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1104: Symposium NN – Actinides 2008—Basic Science, Applications and Technology , 2008 , 1104-NN07-04
Copyright
Copyright © Materials Research Society 2008

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