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Magnetic frustration and spontaneous rotational symmetry breaking in PdCrO2

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arxiv 1904.11933 v2 pith:JWPF6DWY submitted 2019-04-26 cond-mat.str-el cond-mat.mtrl-sci

Magnetic frustration and spontaneous rotational symmetry breaking in PdCrO2

Dan Sun , Dmitry Sokolov , Jack Bartlett , Jhuma Sannigrahi , Seunghyun Khim , Pallavi Kushwaha , Dmitry D. Khalyavin , Pascal Manuel
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Alexandra S. Gibbs Andrew P. Mackenzie Clifford W. Hicks
This is my paper
classification cond-mat.str-el cond-mat.mtrl-sci
keywords magneticantiferromagneticfrustrationin-planeinteractionsinterlayerlatticemeasurements
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In the triangular layered magnet PdCrO2 the intralayer magnetic interactions are strong, however the lattice structure frustrates interlayer interactions. In spite of this, long-range, 120$^\circ$ antiferromagnetic order condenses at $T_N = 38$~K. We show here through neutron scattering measurements under in-plane uniaxial stress and in-plane magnetic field that this occurs through a spontaneous lifting of the three-fold rotational symmetry of the nonmagnetic lattice, which relieves the interlayer frustration. We also show through resistivity measurements that uniaxial stress can suppress thermal magnetic disorder within the antiferromagnetic phase.

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