Emerging magnetic order in YbFe2Zn20 under pressure

ORAL

Abstract

YbFe2Zn20 is one of six closely related heavy fermion compounds, YbT2Zn20 (T = Fe, Ru, Os, Co, Rh, Ir) [1] with the Sommerfeld coefficient γ > 500 mJ/mol K2 and Kondo temperature TK ~ 35 K. Recent measurements under pressure up to ~8 GPa show strong suppression of TK and Fermi-liquid region [2]. We report measurements of electrical resistivity of YbFe2Zn20 single crystals in zero and applied magnetic field under pressures up to ~25 GPa. The data suggest transition from heavy fermion to magnetically ordered ground state under pressure. Possible nature of the magnetic order will be discussed based on the measurements in magnetic field and comparison with the other members of the family.
[1] M.S. Torikachvili et al., PNAS 104 (2007) 9960.
[2] S. K. Kim, et al., Phys. Rev. B 88 (2013) 045116.

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Presenters

  • Sergey Budko

    Ames Laboratory and Iowa State University, Ames Laboratory, Iowa State University, Dept. of Physics and Astronomy, Ames Laboratory/Iowa State University, Ames Laboratory and Iowa State Univ, Iowa State University, Ames Laboratory

Authors

  • Sergey Budko

    Ames Laboratory and Iowa State University, Ames Laboratory, Iowa State University, Dept. of Physics and Astronomy, Ames Laboratory/Iowa State University, Ames Laboratory and Iowa State Univ, Iowa State University, Ames Laboratory

  • Udhara Kaluarachchi

    The Ames Laboratory, Iowa state university/Ames Laboratory, Ames Laboratory and Iowa State Univ, Iowa State University/Ames Laboratory, Ames Laboratory and Iowa State University

  • Li Xiang

    Ames Laboratory and Iowa State Univ, Iowa State University/Ames Laboratory, Ames Laboratory and Iowa State University

  • Viktor Struzhkin

    Carnegie Inst of Washington, Geophysical Laboratory, CIW

  • Jianjun Ying

    Geophysical Laboratory, CIW, High Pressure Collaborative Access Team, Geophysical Laboratory,Carnegie Institution of Washington

  • Alexander Gavriliuk

    INR RAS and FSRC RAS

  • Paul Canfield

    Ames Laboratory and Iowa State University, Ames Laboratory, Iowa State University, Department of Physics and Astronomy, Iowa State University, Dept. of Physics and Astronomy, Ames Laboratory/Iowa State University, Iowa state university/Ames Laboratory, Ames Laboratory and Iowa State Univ, Iowa State University and Ames Laboratory, Iowa State University/Ames Laboratory, Iowa State University, Iowa State University / Ames Laboratory, Dept. of Physics, Iowa State Univ, Ames Lab, Ames Laboratory U.S. DOE and Department of Physics and Astronomy, Iowa State University, Iowa State Univ, Ames Laboratory, Department of Physics and Astronomy, Ames Laboratory and Iowa State University