High Field Measurements of Quantum Materials with In-Situ Tunable Strains

ORAL · Invited

Abstract

Electronic material properties are closely linked to the properties of the underlying crystal lattice. For instance, ferroelectric materials break spatial inversion symmetry and ferromagnetic materials break time reversal symmetry. Consequently, deforming the crystal lattice with strain can have large effects on the electronic behavior of materials. In this talk, I will discuss an in-situ tunable strain technique that is compatible with extreme magnetic field environments (both DC and pulsed magnetic fields). Measurements will be shown on a prototypical electron doped iron pnictide superconductor, Ba(Fe1-xCox)2As2, where strain can be used as a conjugate field for electronic order and in the Weyl semimetal Mn3Sn where strain tunes the topologically driven anomalous Hall effect.

* This work was performed at the National High Magnetic Field Laboratory, which is supported by National Science Foundation Cooperative Agreement No. DMR-1644779 and DMR-2128556, the State of Florida, and the U.S. Department of Energy. This work was supported through the Laboratory Directed Research and Development program of Los Alamos National Laboratory, the CATS Energy Frontier Research Center, and the Department of Energy, Office of Basic Energy Sciences, under Contract No. DE-AC02-76SF00515.

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Publication: Palmstrom, J.C., Walmsley, P., Straquadine, J.A.W. et al. Comparison of temperature and doping dependence of elastoresistivity near a putative nematic quantum critical point. Nat Commun 13, 1011 (2022). https://doi.org/10.1038/s41467-022-28583-3

PHYSICAL REVIEW B 100, 125147 (2019)

Presenters

  • Johanna M Palmstrom

    Los Alamos National Laboratory, NHMFL, Los Alamos National Laboratory, Los Alamos, NM87545, USA

Authors

  • Johanna M Palmstrom

    Los Alamos National Laboratory, NHMFL, Los Alamos National Laboratory, Los Alamos, NM87545, USA