Fluctuation conductivity and normal resistivity in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">YBa</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Cu</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant="normal">y</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>

TL;DRAbstract

Magnetic-field-dependent fluctuation conductivity in the a-b plane of single-crystal ${\mathrm{YBa}}_{2}$${\mathrm{Cu}}_{3}$${\mathrm{O}}_{\mathrm{y}}$ is evaluated using recent theories for layered superconductors considering both Aslamozov-Larkin and Maki-Thompson terms. The normal resistivity, without fluctuation conductivity effects, is also estimated in the temperature region above ${T}_{c}$ using the parameters obtained from the analysis of the field-dependent fluctuation conductivity. The result is substantially different from previously estimated values that are linearly extrapolated from high-temperature data.

Chat with Paper

AI Agents for this Paper