Homogeneous reduced moment in a gapful scalar chiral kagome antiferromagnet

A. Scheie, S. Dasgupta, M. Sanders, A. Sakai, Y. Matsumoto, T. R. Prisk, S. Nakatsuji, R. J. Cava, and C. Broholm
Phys. Rev. B 100, 024414 – Published 12 July 2019; Erratum Phys. Rev. B 101, 089904 (2020)
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Abstract

We present a quantitative experimental investigation of the scalar chiral magnetic order with in Nd3Sb3Mg2O14. Static magnetization reveals a net ferromagnetic ground state, and inelastic neutron scattering from the hyperfine coupled nuclear spin reveals a local ordered moment of 1.76(6) μB, just 61(2)% of the saturated moment size. The experiments exclude static disorder as the source of the reduced moment. A 38(1)μeV gap in the magnetic excitation spectrum inferred from heat capacity rules out thermal fluctuations and suggests a multipolar explanation for the moment reduction. We compare Nd3Sb3Mg2O14 to Nd pyrochlores and show that Nd2Zr2O7 is in a spin fragmented state using nuclear Schottky heat capacity.

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  • Received 25 April 2019

DOI:https://doi.org/10.1103/PhysRevB.100.024414

©2019 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Erratum

Erratum: Homogeneous reduced moment in a gapful scalar chiral kagome antiferromagnet [Phys. Rev. B 100, 024414 (2019)]

A. Scheie, S. Dasgupta, M. Sanders, A. Sakai, Y. Matsumoto, T. R. Prisk, S. Nakatsuji, R. J. Cava, and C. Broholm
Phys. Rev. B 101, 089904 (2020)

Authors & Affiliations

A. Scheie1, S. Dasgupta1, M. Sanders2, A. Sakai3, Y. Matsumoto3, T. R. Prisk4, S. Nakatsuji3, R. J. Cava2, and C. Broholm1,4,5

  • 1Institute for Quantum Matter and Department of Physics and Astronomy, Johns Hopkins University, Baltimore, Maryland 21218
  • 2Department of Chemistry, Princeton University, Princeton, New Jersey 08544
  • 3Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
  • 4NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
  • 5Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, Maryland 21218

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Vol. 100, Iss. 2 — 1 July 2019

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