Electrical resistivity across the tricriticality in itinerant ferromagnet

Petr Opletal; Jan Prokleška; Jaroslav Valenta; Vladimír Sechovský

doi:10.1063/1.5007692

Electrical resistivity across the tricriticality in itinerant ferromagnet

Materials Science 2018-06-07 v1

Authors: Petr Opletal , Jan Prokleška , Jaroslav Valenta , Vladimír Sechovský

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Abstract

We investigate the discontinuous ferromagnetic phase diagram near tricritical point in UCo 1-x Ru x Al compounds by electrical resistivity measurements. Separation of phases in UCo 0.995 Ru 0.005 Al at ambient pressure and in UCo 0.990 Ru 0.010 Al at pressure of 0.2 GPa and disappearance of ferromagnetism at 0.4 GPa is confirmed. The exponent of temperature dependence of electrical resistivity implies change from Fermi liquid behavior to non-Fermi liquid at 0.2 GPa and reaches minimum at 0.4 GPa. Our results are compared to results obtained on the pure UCoAl and explanation for different exponents is given.

Keywords

electrical resistivity tricriticality itinerant ferromagnet Fermi liquid non-Fermi liquid UCoAl

Cite

@article{arxiv.1710.00860,
  title  = {Electrical resistivity across the tricriticality in itinerant ferromagnet},
  author = {Petr Opletal and Jan Prokleška and Jaroslav Valenta and Vladimír Sechovský},
  journal= {arXiv preprint arXiv:1710.00860},
  year   = {2018}
}

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