Pressure-Induced Collapse of Magnetic Order in Jarosite

Ryan A. Klein, James P.S. Walsh, Samantha M. Clarke, Zhenxian Liu, E. Ercan Alp, Wenli Bi, Yue Meng, Alison B. Altman, Paul Chow, Yuming Xiao, M. R. Norman, James M. Rondinelli, Steven D. Jacobsen, Danilo Puggioni, Danna E. Freedman

Research output: Contribution to journalArticlepeer-review

Abstract

We report a pressure-induced phase transition in the frustrated kagomé material jarosite at ∼45 GPa, which leads to the disappearance of magnetic order. Using a suite of experimental techniques, we characterize the structural, electronic, and magnetic changes in jarosite through this phase transition. Synchrotron powder x-ray diffraction and Fourier transform infrared spectroscopy experiments, analyzed in aggregate with the results from density functional theory calculations, indicate that the material changes from a R3¯m structure to a structure with a R3¯c space group. The resulting phase features a rare twisted kagomé lattice in which the integrity of the equilateral Fe3+ triangles persists. Based on symmetry arguments we hypothesize that the resulting structural changes alter the magnetic interactions to favor a possible quantum paramagnetic phase at high pressure.

Original languageEnglish (US)
Article number077202
JournalPhysical review letters
Volume125
Issue number7
DOIs
StatePublished - Aug 14 2020

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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