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Fermi surface investigation of intermetallic La<sub>2</sub>Pt<sub>3</sub>Ge<sub>5</sub>

ORAL

Abstract

Rare-earth intermetallic compounds, specifically those in the R2T3X5 family (where R is rare-earth, T is transition metal, and X is p-block element), have garnered interest due to their novel electronic and magnetic properties. Though they have been a topic of research for decades, detailed Fermi surface studies have been lacking. To fill this void, we performed de Haas-van Alphen effect measurements on La2Pt3Ge5, which was reported to have the highest critical temperature in the R2T3X5 family, Tc ~ 8.1 K [1], though the presence of superconductivity is a topic of debate [2]. Our results from a high-quality sample evidence several small pockets in the Fermi surface. Electronic band structure calculations and the implications of our results will be discussed.

[1] N. H. Sung et al., Phys. Rev. B 86, 224507 (2012)
[2] Q. Sheng et al., Chin. Phys. B 26, 057401 (2017)

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Presenters

  • Elizabeth Green

    Department of Physics, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany, National High Magnetic Field Laboratory

Authors

  • Elizabeth Green

    Department of Physics, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany, National High Magnetic Field Laboratory

  • Johannes Klotz

    HLD (HZDR) / TU Dresden

  • Kathrin Goetze

    HLD (HZDR) / TU Dresden, Physics, Warwick University, Physics, University of Warwick, University of Warwick, Department of Physics, University of Warwick, Physics Department, University of Warwick, Coventry, CV4 7AL, United Kingdom

  • Tobias Foerster

    HLD (HZDR)

  • Marc Uhlarz

    HLD (HZDR)

  • Alix McCollam

    HFML- Nijmegen

  • Jennifer Neu

    National High Magnetic Field Laboratory, Florida State Univ, Natl High Magnetic Field Lab, National High Magnetic Field Laboratory, Florida State University

  • Theo Siegrist

    Florida State Univ, National High Magnetic Field Laboratory, Natl High Magnetic Field Lab, Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL, USA.; Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering,

  • Tino Gottschall

    HLD (HZDR)

  • Joachim Wosnitza

    HLD (HZDR) / TU Dresden, Dresden High Magnetic Field Laboratory, Helmholtz Zentrum Dresden Rossendorf, Hochfeld-Magnetlabor Dresden (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, Helmholtz-Zentrum Dresden-Rossendorf

  • Kefeng Wang

    University of Maryland, College Park, Brookhaven National Laboratory, Department of Physics, University of Maryland, College Park

  • Cedomir Petrovic

    Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Brookhaven National Laboratory, Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Condensed Matter Physics & Materials Science Department, Brookhaven National Laboratory, Brookhaven National Laboratory, NY 11973, USA