Spectrum and low-temperature bulk properties of triangular quantum spin liquid candidate NaYbSe${}_2$

Abstract

We report neutron scattering, pressure-dependent AC calorimetry, and AC magnetic susceptibility measurements of triangular lattice NaYbSe${}_2$. We observe a continuum of scattering, which is reproduced by matrix product simulations, and no phase transition is detected in any bulk measurements. Comparison to heat capacity simulations suggest the material is within the Heisenberg spin liquid phase. AC Susceptibility shows a frequency-dependent peak at 40 mK, as has been observed in several triangular magnets.

5 pages, 4 figures; 7 pages and 13 figures supplemental materials

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