A Class of Compounds Featuring Frustrated Triangular Magnetic Lattice CsRESe${}_2$ (RE=La-Lu): Quantum Spin-Liquid Candidates

Abstract

A triangular lattice selenide series of rare earth (RE), CsRESe2, were synthesized as large single crystals using a flux growth method. This series stabilized in either trigonal (R-3m) 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 K and 1.5 K in the magnetization, respectively, suggesting the short-range interactions between magnetic rare earth 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 quantum spin liquid state.

4 pages, 4 figures

References in corpus (6)

• Identifying Topological Order by Entanglement Entropy
• Continuous excitations of the triangular-lattice quantum spin liquid YbMgGaO4
• $\mu$SR evidence for the U(1) quantum spin liquid ground state in the triangular antiferromagnet YbMgGaO${}_4$
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• Synthesis, magnetization and heat capacity of triangular lattice materials NaErSe${}_2$ and KErSe${}_2$

Cited by in corpus (10)

• Anisotropic field-induced ordering in the triangular-lattice quantum spin liquid NaYbSe${}_2$
• Field-induced magnetic transition and spin fluctuation in quantum spin liquid candidate CsYbSe${}_2$
• Spin excitations in the frustrated triangular lattice antiferromagnet NaYbO${}_2$
• Long-range magnetic order in the $\tilde{S}=1/2$ triangular lattice antiferromagnet KCeS${}_2$
• Magnetic Topological Semimetal Phase with Electronic Correlation Enhancement in SmSbTe
• Disorder-induced spin-liquid-like behavior in kagome-lattice compounds
• Stripe-yz magnetic order in the triangular-lattice antiferromagnet KCeS2
• Magnetic properties and signatures of moment ordering in triangular lattice antiferromagnet KCeO${}_2$
• Evolution of Electronic and Magnetic Properties in Topological Semimetal SmSbxTe2-x
• Magnetic anisotropy and dipolar interactions in the frustrated triangular-lattice magnet NaGdS_2