Effect of pressure on charge density wave order in the cuprate superconductor Nd-LSCO

ORAL

Abstract

A phase of charge-density-wave (CDW) order is present in all hole-doped cuprates near a doping p = 0.12. As it competes with superconductivity, this CDW order causes a suppression of Tc near p = 0.12, visible as a dip in the Tc vs p dome of various cuprates.
In YBCO, the Tc dip is removed by application of pressure, which led to the proposal that pressure suppresses CDW order in that material [1], later confirmed directly by x-ray measurements [2].
Here we investigate the effect of pressure on CDW order in the cuprate La1.6-xNd0.4SrxCuO4 (Nd-LSCO), by looking at signatures of the Fermi-surface reconstruction caused by CDW order, namely a drop in the Hall coefficient at low temperature, to negative values [3,4]. We find that pressures up to 2 GPa have little effect on the Hall coefficient in under doped region, showing that the CDW phase is not suppressed by pressure.
We will contrast the insensitivity of CDW order to pressure in Nd-LSCO to the rapid lowering of the pseudogap critical point p* by pressure in that material [5], showing that CDW and pseudogap are distinct phases.
[1] O. Cyr-Choiniere et al., arXiv:1503.02033
[2] S. M. Souliou et al., arXiv:1709.10501
[3] D. LeBoeuf et al., Nature 450, 533
[4] D. LeBoeuf et al., Phys. Rev. B 83, 054506
[5] N. Doiron-Leyraud et al., to appear

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Presenters

  • Amirreza Ataei

    Université de Sherbrooke, University of Sherbrooke

Authors

  • Amirreza Ataei

    Université de Sherbrooke, University of Sherbrooke

  • Adrien Gourgout

    University of Sherbrooke

  • Sven Badoux

    Institut quantique, University of Sherbrooke, Univ of Sherbrooke, Université de Sherbrooke, University of Sherbrooke

  • Francis Laliberte

    Institut quantique, University of Sherbrooke, Univ of Sherbrooke, Université de Sherbrooke, University of Sherbrooke, Institut Quantique, Universite de Sherbrooke

  • Alizée Navarro

    University of Sherbrooke

  • Nicolas Doiron-Leyraud

    Institut quantique, University of Sherbrooke, Univ of Sherbrooke, University of Sherbrooke

  • Louis Taillefer

    Institut quantique, University of Sherbrooke, Univ of Sherbrooke, Université de Sherbrooke, University of Sherbrooke

  • Jianshi Zhou

    Univ of Texas, University of Texas, University of Texas at Austin, Texas Materials Institute, University of Texas at Austin, Univ of Texas, Austin, Mechanical Engineering, University of Texas at Austin, University of Texas, at Austin