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Crystal Synthesis and Frustrated Magnetism in Triangular Lattice CsRESe2 (RE = La–Lu): Quantum Spin Liquid Candidates CsCeSe2 and CsYbSe2 AITranslate

Jie Xing; Liurukara D. Sanjeewa; Jungsoo Kim; G. R. Stewart; MaoHua Du; Fernando A. Reboredo; Radu Custelcean; Athena S. Sefat;
Oak Ridge National Laboratory; Oak Ridge National Laboratory; University of Florida; University of Florida; Oak Ridge National Laboratory; Oak Ridge National Laboratory; Oak Ridge National Laboratory; Oak Ridge National Laboratory
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Publisher: ACS
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Abstract AITranslate

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 (R3̅m) 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.

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DOI：https://doi.org/10.1021/acsmaterialslett.9b00464

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Citation Information:

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 (R3̅m) 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.

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GB/T 7714-2015 [1] Jie Xing, Liurukara D. Sanjeewa, Jungsoo Kim, et al. ACS Materials Letters, 2020(2). DOI:10.1021/acsmaterialslett.9b00464.
MLA [1] Jie Xing, et al., ACS Materials Letters, no. 2, 2020, https://doi.org/10.1021/acsmaterialslett.9b00464.
APA [1] Jie Xing, Liurukara D. Sanjeewa, Jungsoo Kim, G. R. Stewart, MaoHua Du, Fernando A. Reboredo, Radu Custelcean, & Athena S. Sefat. (2020). ACS Materials Letters(2). https://doi.org/10.1021/acsmaterialslett.9b00464
IEEE [1] Jie Xing, Liurukara D. Sanjeewa, Jungsoo Kim, G. R. Stewart, MaoHua Du, Fernando A. Reboredo, Radu Custelcean, and Athena S. Sefat, ACS Materials Letters, no. 2, 2020, doi: 10.1021/acsmaterialslett.9b00464.