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Crystal Synthesis and Frustrated Magnetism in Triangular Lattice CsRESe2 (RE = La–Lu): Quantum Spin Liquid Candidates CsCeSe2 and CsYbSe2
ACS Materials Letters ( IF 9.6 ) Pub Date : 2019-12-03 , DOI: 10.1021/acsmaterialslett.9b00464 Jie Xing 1 , Liurukara D. Sanjeewa 1 , Jungsoo Kim 2 , G. R. Stewart 2 , Mao-Hua Du 1 , Fernando A. Reboredo 1 , Radu Custelcean 3 , Athena S. Sefat 1
ACS Materials Letters ( IF 9.6 ) Pub Date : 2019-12-03 , DOI: 10.1021/acsmaterialslett.9b00464 Jie Xing 1 , Liurukara D. Sanjeewa 1 , Jungsoo Kim 2 , G. R. Stewart 2 , Mao-Hua Du 1 , Fernando A. Reboredo 1 , Radu Custelcean 3 , Athena S. Sefat 1
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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.
中文翻译：
三角晶格Cs RE Se 2（RE = La–Lu）中的晶体合成和受阻磁性：量子自旋液体候选CsCeSe 2和CsYbSe 2
使用助熔剂生长法，合成了三角形晶格硒化物系列稀土（RE）Cs RE Se 2，作为大的单晶。该系列中任一三角（稳定化- [R 3米）或六边形（P 6 3 / MMC）晶系。通过磁化率和低至0.4 K的热容测量来探索Cs RE Se 2的物理性质。在所有磁性化合物中均观察到反铁磁相互作用，而未发现长距离磁序，表明磁性受挫。CsDySe 2呈现在0.7 K的自旋冻结，揭示了自旋玻璃状态。CsCeSe 2和CsYbSe 2在磁化中分别在0.7和1.5 K处出现宽峰，表明磁性RE离子之间存在短程相互作用。这些化合物（RE = Ce，Yb）缺乏远距离磁序的签名和自旋冻结至0.4 K，这暗示了它们对量子自旋液态的候选资格。
更新日期：2019-12-04
中文翻译：
三角晶格Cs RE Se 2（RE = La–Lu）中的晶体合成和受阻磁性：量子自旋液体候选CsCeSe 2和CsYbSe 2
使用助熔剂生长法，合成了三角形晶格硒化物系列稀土（RE）Cs RE Se 2，作为大的单晶。该系列中任一三角（稳定化- [R 3米）或六边形（P 6 3 / MMC）晶系。通过磁化率和低至0.4 K的热容测量来探索Cs RE Se 2的物理性质。在所有磁性化合物中均观察到反铁磁相互作用，而未发现长距离磁序，表明磁性受挫。CsDySe 2呈现在0.7 K的自旋冻结，揭示了自旋玻璃状态。CsCeSe 2和CsYbSe 2在磁化中分别在0.7和1.5 K处出现宽峰，表明磁性RE离子之间存在短程相互作用。这些化合物（RE = Ce，Yb）缺乏远距离磁序的签名和自旋冻结至0.4 K，这暗示了它们对量子自旋液态的候选资格。
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