Persistent spin dynamics in the pressurized spin-liquid candidate YbMgGaO_{4}

Single-crystal x-ray diffraction, density functional band structure calculations, and muon spin relaxation (μSR) are used to probe the pressure evolution of the triangular spin-liquid candidate YbMgGaO_{4}. The rhombohedral crystal structure is retained up to at least 10 GPa and shows a nearly unifo...

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Published inPhysical review research Vol. 2; no. 2; p. 023191
Main Authors Mayukh Majumder, Gediminas Simutis, Ines E. Collings, Jean-Christophe Orain, Tusharkanti Dey, Yuesheng Li, Philipp Gegenwart, Alexander A. Tsirlin
Format Journal Article
LanguageEnglish
Published American Physical Society 01.05.2020
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Summary:Single-crystal x-ray diffraction, density functional band structure calculations, and muon spin relaxation (μSR) are used to probe the pressure evolution of the triangular spin-liquid candidate YbMgGaO_{4}. The rhombohedral crystal structure is retained up to at least 10 GPa and shows a nearly uniform compression along both the in-plane and out-of-plane directions, whereas local distortions caused by the random distribution of Mg^{2+} and Ga^{3+} remain mostly unchanged. The μSR data confirm persistent spin dynamics up to 2.6 GPa and down to 250 mK with no change in the muon relaxation rate. Longitudinal-field μSR reveals power-law behavior of the spin-spin autocorrelation function, both at ambient pressure and upon compression.
ISSN:2643-1564
DOI:10.1103/PhysRevResearch.2.023191