Effect of pressure on the valence transition in CeOs<sub>4</sub>Sb<sub>12</sub>

POSTER

Abstract

At low temperatures T, the filled skutterudite CeOs4Sb12 is a heavy-fermion compensated semimetal. It also exhibits a ~1 K Spin-Density-Wave (SDW) phase and has been suggested to possess topologically protected states. Penetration depth and resistivity measurements reveal a Fermi-surface reconstruction in CeOs4Sb12 with an unusual temperature T vs magnetic field H phase diagram that is associated with a valence transition [1,2]. In this report, we present the influence of pressure on the electronic properties and T-H phase boundaries of the valence transition and the SDW. Refs: [1] K. Götze et. al, PRB 101, 075102 (2020). [2] P.-C. Ho et. al, PRB 94, 205140 (2016).

*Research at CSU-Fresno is supported by NSF DMR-1905636; at UCSD by NSF DMR-1810310 & US DOE DEFG02-04ER46105; at U of Warwick by the EPSRC & ERC; at the NHMFL, USA, by NSF DMR-1644779, State of FL, US DOE, & DOE BES FWP Science in 100T.

Presenters

  • Pei-Chun Ho

    • California State University, Fresno
    • Califor. State U, Fresno

Authors

  • Pei-Chun Ho

    • California State University, Fresno
    • Califor. State U, Fresno

  • Kathrin Goetze

    • University of Warwick

  • Matthew J Pearce

    • University of Warwick
    • Warwick University

  • Matthew J Coak

    • University of Warwick

  • Paul A Goddard

    • Univ of Warwick
    • University of Warwick

  • Audrey D Grockowiak

    • NHMFL, Florida State University

  • David E Graf

    • Florida State University
    • National High Magnetic Field Laboratory
    • NHMFL, Florida State University
    • National High Magnetic Field Laboratory and Department of Physics, Florida State University

  • Stanley W Tozer

    • NHMFL, Florida State University

  • M Brian Maple

    • Department of Physics, University of California, San Diego
    • University of California, San Diego
    • University of California - San Diego
    • University of California San Diego

  • John Singleton

    • Los Alamos Natl Lab
    • NHMFL, Los Alamos National Lab
    • NHMFL/ LANL