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  Heisenberg spins on an anisotropic triangular lattice: PdCrO2 under uniaxial stress

Sun, D., Sokolov, D., Waite, R., Khim, S., Manuel, P., Orlandi, F., et al. (2021). Heisenberg spins on an anisotropic triangular lattice: PdCrO2 under uniaxial stress. New Journal of Physics, 23(12): 123050, pp. 1-10. doi:10.1088/1367-2630/ac4280.

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 Creators:
Sun, Dan1, Author              
Sokolov, Dmitry1, Author              
Waite, Richard2, Author
Khim, Seunghyun1, Author              
Manuel, Pascal2, Author
Orlandi, Fabio2, Author
Khalyavin, Dmitry D.2, Author
Mackenzie, Andrew P.3, Author              
Hicks, Clifford W.4, Author              
Affiliations:
1Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
2External Organizations, ou_persistent22              
3Andrew Mackenzie, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863463              
4Clifford Hicks, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863466              

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 Abstract: When Heisenberg spins interact antiferromagnetically on a triangular lattice and nearest-neighbor interactions dominate, the ground state is 120 degrees antiferromagnetism. In this work, we probe the response of this state to lifting the triangular symmetry, through investigation of the triangular antiferromagnet PdCrO2 under uniaxial stress by neutron diffraction and resistivity measurements. The periodicity of the magnetic order is found to change rapidly with applied stress; the rate of change indicates that the magnetic anisotropy is roughly forty times the stress-induced bond length anisotropy. At low stress, the incommensuration period becomes extremely long, on the order of 1000 lattice spacings; no locking of the magnetism to commensurate periodicity is detected. Separately, the magnetic structure is found to undergo a first-order transition at a compressive stress of similar to 0.4 GPa, at which the interlayer ordering switches from a double-to a single-q structure.

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Language(s): eng - English
 Dates: 2021-12-292021-12-29
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000735624800001
DOI: 10.1088/1367-2630/ac4280
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Title: New Journal of Physics
  Abbreviation : New J. Phys.
Source Genre: Journal
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Publ. Info: Bristol : IOP Publishing
Pages: - Volume / Issue: 23 (12) Sequence Number: 123050 Start / End Page: 1 - 10 Identifier: ISSN: 1367-2630
CoNE: https://pure.mpg.de/cone/journals/resource/954926913666