Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2003-05-06
Physics
Condensed Matter
Strongly Correlated Electrons
4 pages including 3 figures
Scientific paper
10.1143/JPSJ.73.1123
The effect of uniaxial pressure on superconductivity was examined for a high-Tc cuprate La1.64Eu0.2Sr0.16CuO4, which is located at the boundary between the superconducting and stripe phases. We found remarkably large anisotropy of the uniaxial pressure effect not only between the in-plane and out-of-plane pressures but also within the CuO2-plane. When the pressure is applied along the tetragonal [110] direction, we found the largest pressure effect ever observed in cuprates, dTc/dP - 2.5 K/kbar, while the change of Tc was not appreciable when applied along [100]. This substantial in-plane anisotropy is attributed to an intimate link between the symmetry of the one-dimensional stripes and that of the strain produced within the CuO2 plane.
Sasagawa Taisuke
Sugioka T.
Takagi Hidekazu
Takeshita Nao
Tokura Yasuhiro
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