Fingerprinting triangular-lattice antiferromagnet by excitation gaps

K. E. Avers, P. A. Maksimov, P. F.S. Rosa, S. M. Thomas, J. D. Thompson, W. P. Halperin, R. Movshovich, A. L. Chernyshev

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

CeCd3As3 is a rare-earth triangular-lattice antiferromagnet with large interlayer separation. Our field-dependent heat capacity measurements at dilution fridge temperatures allow us to trace the field evolution of the spin-excitation gaps throughout the antiferromagnetic and paramagnetic regions. The distinct gap evolution places strong constraints on the microscopic pseudospin model, which, in return, yields a close quantitative description of the gap behavior. This analysis provides crucial insights into the nature of the magnetic state of CeCd3As3, with a certainty regarding its stripe order and low-energy model parameters that sets a compelling paradigm for exploring and understanding the rapidly growing family of the rare-earth-based triangular-lattice systems.

Original languageEnglish (US)
Article numberL180406
JournalPhysical Review B
Volume103
Issue number18
DOIs
StatePublished - May 21 2021

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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