Pressure-Induced Collapse of Magnetic Order in Jarosite

Academic Article

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.
  • Authors

    Published In

    Digital Object Identifier (doi)

    Author List

  • Klein RA; Walsh JPS; Clarke SM; Liu Z; Alp EE; Bi W; Meng Y; Altman AB; Chow P; Xiao Y
  • Volume

  • 125
  • Issue

  • 7