Abstract
A triangular lattice selenide series of rare earths (RE), CsRESe2, were synthesized as large single crystals, using a flux growth method. This series stabilized in either trigonal (R3¯ m) or hexagonal (P63/mmc) crystal systems. Physical properties of CsRESe2 were explored by magnetic susceptibility and heat capacity measurements down to 0.4 K. Antiferromagnetic interaction was observed in all magnetic compounds, while no long-range magnetic order was found, indicating the frustrated magnetism. CsDySe2 presents spin freezing at 0.7 K, revealing a spin-glass state. CsCeSe2 and CsYbSe2 present broad peaks at 0.7 and 1.5 K, respectively, in the magnetization, suggesting the short-range interactions between magnetic RE ions. The lack of signature for long-range magnetic order and spin freezing down to 0.4 K in these compounds (RE = Ce, Yb) implies their candidacy for a quantum spin liquid state.
| Original language | English |
|---|---|
| Pages (from-to) | 71-75 |
| Number of pages | 5 |
| Journal | ACS Materials Letters |
| Volume | 2 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 6 2020 |
Funding
The research is supported by the U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences (BES), Materials Science and Engineering Division. The X-ray diffraction analysis by R.C. was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Chemical Sciences, Geosciences, and Biosciences Division. Work at Florida by J.S.K. and G.R.S. was supported by the U.S. Department of Energy, Basic Energy Sciences (Contract No. DE-FG02-86ER45268). This manuscript has been authored by UT-Battelle, LLC, under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The U.S. Government retains and the publisher, by accepting the article for publication, acknowledges that the U.S. Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for U.S. Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan.