Proximate spin liquid ground state arising from competing stripy and ${120}^{∘}$ spin correlations in the triangular quantum antiferromagnet ${\mathrm{ErMgGaO}}_{4}$
Relevance
直接研究三角晶格量子反铁磁体中接近自旋液体相边界的基态，观测非弹性中子散射连续谱及 stripy 与 120° 关联的竞争。
该条目只有相关性判断，尚未生成结构化深度摘要。
展开原始摘要
Author(s): S. H.-Y. Huang, S. Petit, B. Yuan, Z. W. Cronkwright, C. Pinvidic, Y. Wang, E. M. Smith, S. Bhattacharya, C. Yang, J.-M. Zanotti, Q. Berrod, M. B. Stone, A. I. Kolesnikov, R. J. Cava, E. Kermarrec, and B. D. Gaulin ErMgGaO 4 is a quantum antiferromagnet, wherein pseudospin-½ degrees of freedom decorate two-dimensional triangular planes. Powder ErMgGaO 4 shows a freezing transition near T g ~ 2.5 K, about 1/6 of its Curie-Weiss temperature. The authors observe here a continuum of inelastic neutron scattering, and estimate are its spin-Hamiltonian within a theoretical J 1 - J 2 - Δ model. This places ErMgGaO 4 close to the quantum phase boundary between the expected spin liquid and the stripy ordered phases. Elastic scattering shows two-dimensional Warren lineshapes near T g , which elucidate the competition between stripy and 120° spin correlations. [Phys. Rev. B 114, 034421] Published Tue Jul 21, 2026