Electron Spin Resonance on the spin-1/2 triangular magnet NaYbS2

Jörg Sichelschmidt; Philipp Schlender; Burkhard Schmidt; Michael Baenitz; Thomas Doert

doi:10.1088/1361-648X/ab071d

Electron Spin Resonance on the spin-1/2 triangular magnet NaYbS2

Strongly Correlated Electrons 2019-03-11 v1

Authors: Jörg Sichelschmidt , Philipp Schlender , Burkhard Schmidt , Michael Baenitz , Thomas Doert

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Abstract

The delafossite structure of NaYbS2 contains a planar spin-1/2 triangular lattice of Yb3+ ions and features a possible realisation of a quantum spin-liquid state. We investigated the Yb3+ spin dynamics by Electron Spin Resonance (ESR) in single-crystalline samples of NaYbS2. Very clear spectra with a well-resolved and large anisotropy could be observed down to the lowest accessible temperature of 2.7 K. In contrast to the ESR properties of other known spin-liquid candidate systems, the resonance seen in NaYbS2 is accessible at low fields (< 1T) and is narrow enough for accurate characterisation of the relaxation rate as well as the g factor of the Yb3+ spins.

Keywords

quantum spin liquids frustrated magnetism magnetic materials and spin systems

Cite

@article{arxiv.1812.07871,
  title  = {Electron Spin Resonance on the spin-1/2 triangular magnet NaYbS2},
  author = {Jörg Sichelschmidt and Philipp Schlender and Burkhard Schmidt and Michael Baenitz and Thomas Doert},
  journal= {arXiv preprint arXiv:1812.07871},
  year   = {2019}
}

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8 pages

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