Multi-probe mapping of optimally doped BaFe$_2$(As$_{1-x}$P$_x$)$_2$

ORAL

Abstract

The superconductor BaFe$_2$(As$_{1-x}$P$_x$)$_2$ has a rich phase diagram. Much like in the cuprates, the parent compound has an antiferromagnetic phase that yields to superconductivity with doping. Evidence for a variety of nematic phenomena, including a nematic phase transition extending above the superconducting dome and a nematic quantum critical point at optimal doping, has emerged. We have studied an optimally doped sample using scanning X-ray microdiffraction and pump-probe birefringence microscopy. Combining these techniques allows us to image built-in strain and its dynamical effects locally, and we report correlations between local strain and ultrafast dynamics.

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Authors

  • Eric Thewalt

    • University of California, Berkeley
    • University of California, Berkeley and Lawrence Berkeley National Laboratory

  • James Hinton

    • University of California, Berkeley and Lawrence Berkeley National Laboratory

  • Ian Hayes

    • University of California, Berkeley and Lawrence Berkeley National Laboratory

  • Arielle Little

    • University of California, Berkeley and Lawrence Berkeley National Laboratory

  • Shreyas Patankar

    • University of California, Berkeley and Lawrence Berkeley National Laboratory

  • Liang Wu

    • University of California, Berkeley and Lawrence Berkeley National Laboratory

  • Toni Helm

    • Max Planck Institute for Chemical Physics of Solids

  • Nobumichi Tamura

    • Lawrence Berkeley National Laboratory

  • Dung-Hai Lee

    • University of California, Berkeley and Lawrence Berkeley National Laboratory

  • James Analytis

    • University of California, Berkeley and Lawrence Berkeley National Laboratory

  • Joseph Orenstein

    • University of California, Berkeley and Lawrence Berkeley National Laboratory