Gigantic Anisotropic Uniaxial Pressure Effect on Superconductivity within the CuO<sub>2</sub>Plane of La<sub>1.64</sub>Eu<sub>0.2</sub>Sr<sub>0.16</sub>CuO<sub>4</sub>: Strain Control of Stripe Criticality

DOI DOI Web Site Web Site BIBCODE 被引用文献8件 参考文献39件 オープンアクセス
  • Takeshita Nao
    Correlated Electron Research Center (CERC), National Institute of Advanced Industrial Science and Technology (AIST)
  • Sasagawa Takao
    Department of Advanced Materials Science, University of Tokyo CREST, Japan Science and Technology Corporation (JST)
  • Sugioka Takenari
    Department of Advanced Materials Science, University of Tokyo
  • Tokura Yoshinori
    Correlated Electron Research Center (CERC), National Institute of Advanced Industrial Science and Technology (AIST) Department of Applied Physics, University of Tokyo
  • Takagi Hidenori
    Correlated Electron Research Center (CERC), National Institute of Advanced Industrial Science and Technology (AIST) Department of Advanced Materials Science, University of Tokyo CREST, Japan Science and Technology Corporation (JST)

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  • Gigantic Anisotropic Uniaxial Pressure Effect on Superconductivity within the CuO2 Plane of La1.64Eu0.2Sr0.16CuO4: Strain Control of Stripe Criticality

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説明

The effect of uniaxial pressure on superconductivity was examined for high-Tc cuprate La1.64Eu0.2Sr0.16CuO4, which is located at the boundary between the superconducting and stripe phases. We found markedly large anisotropy of the uniaxial pressure effect not only between the in-plane and out-of-plane pressures but also within the tetragonal CuO2 plane. When the pressure is applied along the [110] direction, we found the largest pressure effect ever observed in cuprates, dTc⁄dP[110]∼2.5 K/kbar, while the change in Tc was not appreciable when the pressure is applied along [100]. This substantial in-plane anisotropy is attributed to an intimate link between the symmetry of one-dimensional stripes and that of the strain produced within the CuO2 plane.

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