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Ferromagnetic quantum critical point in UCo1-xFexGe

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arxiv 1303.3228 v1 pith:COOQYUZS submitted 2013-03-13 cond-mat.str-el

Ferromagnetic quantum critical point in UCo1-xFexGe

K. Huang , J. J. Hamlin , R. E. Baumbach , M. Janoschek , N. Kanchanavatee , D. A. Zocco , F. Ronning , M. B. Maple This is my paper
classification cond-mat.str-el
keywords ferromagnetictemperaturecriticalelectricalheatpointquantumresistivity
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We have carried out a comprehensive study of the UCo1-xFexGe series across the entire range of compositions 0 <= x <= 1, and report the results of x-ray diffraction, magnetization, specific heat, and electrical resistivity to uncover the T-x phase diagram. Substitution of Fe into UCoGe initially results in an increase in the Curie temperature and a rapid destruction of the superconductivity. Near x = 0.22, the ferromagnetic transition is suppressed to zero temperature at an apparent ferromagnetic itinerant electron quantum critical point, where the temperature dependence of the electrical resistivity and specific heat in this region reveal non-Fermi liquid behavior.

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