Magnetic frustration and spontaneous rotational symmetry breaking in PdCrO2

Sun, Dan; Sokolov, Dmitry A.; Bartlett, Jack M.; Sannigrahi, Jhuma; Khim, Seunghyun; Kushwaha, Pallavi; Khalyavin, Dmitry D.; Manuel, Pascal; Gibbs, Alexandra S.; Takagi, Hidenori; Mackenzie, Andrew P.; Hicks, Clifford W.

doi:10.1103/PhysRevB.100.094414

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Magnetic frustration and spontaneous rotational symmetry breaking in PdCrO₂

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Sun, Dan
Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Sokolov, Dmitry A.
Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Bartlett, Jack M.
Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Sannigrahi, Jhuma
Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Khim, Seunghyun
Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Kushwaha, Pallavi
Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Mackenzie, Andrew P.
Andrew Mackenzie, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Hicks, Clifford W.
Clifford Hicks, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Sun, D., Sokolov, D. A., Bartlett, J. M., Sannigrahi, J., Khim, S., Kushwaha, P., et al. (2019). Magnetic frustration and spontaneous rotational symmetry breaking in PdCrO₂. Physical Review B, 100(9): 094414, pp. 1-10. doi:10.1103/PhysRevB.100.094414.

Cite as: https://hdl.handle.net/21.11116/0000-0008-8688-7

Abstract

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 degrees 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 breaking of the threefold 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.