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arXiv · 1812.07871

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

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.

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Jörg Sichelschmidt, Philipp Schlender, Burkhard Schmidt, Michael Baenitz, Thomas Doert. 2018-12-19. Electron Spin Resonance on the spin-1/2 triangular magnet NaYbS2. https://doi.org/10.1088/1361-648x%2Fab071d

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