### Abstract

We report measurements of thermoelectric power (TEP) for high-pressure synthesized (Formula presented)(Formula presented)(Formula presented)(Formula presented) superconductors. The magnitude of TEP for the sample with (Formula presented)=115.9 K is very small and shows a sign crossover at ∼160 K. The TEP shows a peak behavior and displays an approximately linear temperature dependence with a negative slope -0.033 μV/(Formula presented) for 120≤T≤240 K. These features resemble those for other known high-(Formula presented) cuprate superconductors, in particular (Formula presented) in the a direction for an untwinned (Formula presented)(Formula presented)(Formula presented) single crystal and polycrystalline Tl-2201 samples. A brief discussion is given on the TEP behavior in comparison with (Formula presented)(Formula presented)(Formula presented) cuprate superconductors by considering their similar structure of building blocks and type of charge reservoir.

Original language | English |
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Pages (from-to) | 5170-5173 |

Number of pages | 4 |

Journal | Physical Review B - Condensed Matter and Materials Physics |

Volume | 53 |

Issue number | 9 |

DOIs | |

Publication status | Published - 1996 Jan 1 |

### All Science Journal Classification (ASJC) codes

- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics

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## Cite this

*Physical Review B - Condensed Matter and Materials Physics*,

*53*(9), 5170-5173. https://doi.org/10.1103/PhysRevB.53.5170