2009/12/01 by T. Fujii, Takenori Fujii, Tomonori Matsushima +5 · 1 citation
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Magnetic and transport properties of perovskites and related materials #Physics of Superconductivity and Magnetism #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1016/j.physc.2009.12.021
3pages, 2figures
arxiv created 2009/12/01 · openalex publication_date 2009/12/17 · arxiv updated 2014/06/24 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We have precisely measured the Nernst effect in Nd-doped La2-xSrxCuO4 single crystals with controlling the strength (stability) of the stripe order. We found that the onset temperature Tonset, where the Nernst signal starts increasing, does not change conspicuously in spite of Nd-doping. At low temperatures, on the other hand, the absolute value of the Nernst signal is strongly suppressed in accordance with the strength of the stripe order. These results imply that the fluctuation of (charge) stripe order enhances the Nernst signal below Tonset at high temperatures, and then the stripe order enhanced by Nd-doping suppresses the superconducting fluctuation to reduce the Nernst signal at low temperatures. We also observed an increase of the Nernst signal below the charge order temperature Tch which is observed in diffraction measurement.