Contact

    Clifford Hicks, PhD
    Phone: +49 351 4646-3227
    Fax: +49 351 4646-3232
    Helge Rosner, Dr.
    Phone: +49 351 4646-2233
    Fax: +49 351 4646-4902
    Lukas Eng, Prof. Dr.
    Phone: 49-(0)351-463-33427
    Fax: 49-(0)351-463-37065

    Magnetic compounds under uniaxial pressure

    The magnetic order in many compounds is based on a balance of interactions. For example, in PdCrO2 commensurate triangular magnetic order is allowed because the lattice is triangular. However, when uniaxial pressure is applied some of the bonds become stronger than others, and the magnetic order may become incommensurate.

    In this project, you will investigate how magnetic order of various compounds is altered by shifting the balance between different interactions through uniaxial pressure. Methods to address this general problem include measurement of resistivity, magnetic susceptibility, heat capacity, muon spin rotation, neutron scattering, and magnetic force microscopy.

    J. Park, H. Sakai, O. Erten, A. P. Mackenzie, and C. W. Hicks, Arxiv:1708.07091.
    C. W. Hicks et al, Phys. Rev. B 92 014425 (2015).
    D. O. Brodsky et al, Sci. Advances 3 e1501804 (2017).

    Resistivity of CeAuSb<sub>2</sub> under uniaxial pressure. At low strains, the antiferromagnetic transition is sharp, but when the sample is compressed by more than -0.25 %, the transition splits into two features.
    Resistivity of CeAuSb2 under uniaxial pressure. At low strains, the antiferromagnetic transition is sharp, but when the sample is compressed by more than -0.25 %, the transition splits into two features.
     
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