Scalar Chiral order on Kagome Antiferromagnet $\rm{Nd_3Sb_3 Mg_2O_14}$

ORAL

Abstract

We report the magnetic structure of rare earth kagome compound $\rm{Nd_3Sb_3 Mg_2O_14}$. Thermodynamic measurements show a Curie-Weiss temperature of CW = −0.12 K, a Nd$^{3+}$ spin-1/2 Kramers doublet ground state, and a second-order phase transition at $T_N$ = 0.56(2) K. Neutron scattering reveals noncoplanar scalar chiral k = 0 long-range magnetic order with an ordered moment of $1.79(5)\mu_B$. This order includes a canted ferromagnetic component perpendicular to the kagome planes, which we have confirmed through low T magnetization measurements. We also report the crystal field levels of $\rm{Nd_3Sb_3 Mg_2O_14}$ and infer the ground state doublet wave function.

*US Department of Energy, Division of Basic Energy Sciences, Grant No. DE-FG02-08ER46544, Gordon and Betty Moore Foundation under the EPIQS program GBMF4532

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Authors

  • Allen Scheie

    • Johns Hopkins University

  • Marisa Sanders

    • Princeton University

  • Jason Krizan

    • Princeton University

  • Akito Sakai

    • University of Tokyo

  • Yosuke Matsumoto

    • University of Tokyo

  • Yiming Qiu

    • National Institute of Standards and Technology Center for Neutron Research

  • Andrew Christianson

    • Oak Ridge National Lab Spallation Neutron Source

  • Satoru Nakatsuji

    • University of Tokyo

  • Bob Cava

    • Princeton University

  • Collin Broholm

    • Johns Hopkins University