Year: 2021
Type: article
Abstract: Recent interest in honeycomb lattice materials has focused on their potential to host quantum spin liquid (QSL) states. Variations in bond angles and spin allow a range of interesting behaviors on this lattice, from the predicted QSL ground state of the Kitaev model to exotic magnetic orders. Here we report the physical properties of two compounds with rare earths on an approximate honeycomb lattice. The isostructural compounds ${\mathrm{Nd}}_{2}{\mathrm{S}}_{5}\mathrm{Sn}$ ($J=\frac{9}{2}$) and ${\mathrm{Pr}}_{2}{\mathrm{S}}_{5}\mathrm{Sn}$ ($J=4$) permit a direct comparison of half-integer versus integer spins on this lattice. We find strikingly different magnetic properties for the two compounds. ${\mathrm{Nd}}_{2}{\mathrm{S}}_{5}\mathrm{Sn}$ orders antiferromagnetically at ${T}_{N}\ensuremath{\approx}2.5$ K and undergoes several magnetic transitions to other ordered states under applied field. ${\mathrm{Pr}}_{2}{\mathrm{S}}_{5}\mathrm{Sn}$ displays no magnetic ordering transition above $T=0.41$ K, and may be proximate to a spin liquid state.
Source: Physical Review Materials
Authors: V. J. Stewart, J. R. Chamorro, T. M. McQueen
Institution: Johns Hopkins University
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Awards: G3475046565, G3820934480
OpenAlex ID: W3152291672