Regensburg 2019 – wissenschaftliches Programm
MA 6.10: Vortrag
Montag, 1. April 2019, 17:30–17:45, Theater
Spin orbit entangled planar J=1/2 triangular lattice magnet NaYbS2: from a putative spin liquid to field induced magnetic order — •M. Baenitz1, K.M. Ranjith1, Ph. Schlender2, J. Sichelschmidt1, B. Schmidt1, H. Yasuoka1, A.P. Mackenzie1, and Th. Doert2 — 1MPI for Chemical Physics of Solids, D-01187 Dresden, Germany — 2TU Dresden, Department of Chemistry and Food Chemistry, D-01062 Dresden, Germany
Spin orbit coupling (SOC) brought significant progress to the field of quantum spin liquids (QSLs). Having strong spin orbit entanglement promote Yb-based magnets to ideal prime candidates for QSLs and as such NaYbS2 is a unique model system for planar spin 1/2 triangular lattice magnetism (TLM). In contrast to YbMgGaO4 , which shares the same space group (R-3m) and highlighted as first SOC-TLM-QSL, NaYbS2lacks inherent lattice distortions and Yb resides on a unique centrosymmetric position in the YbS6 octahedron. Our comprehensive single crystal study combines bulk- and local- probes and identifies NaYbS2 as a new spin orbit entangled TLM and putative QSL hosted on a perfect triangular lattice . The application of fields along the (a,b)-plane introduces magnetic order, whereas for fields in the c-direction the system remains unaffected. We present magnetization, specific heat and NMR data down to 300 mK for both directions.
J.A.M. Paddison et al., Nat. Phys. 13, 112 (2017)
M. Baenitz et al.c arXiv:1809.01947 (2018)