arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0903.2886cond-mat.supr-con
收藏

从电子结构计算高温超导体的热电功率

Thermoelectric power of high-Tc superconductors calculated from the electronic structure

J. G. Storey, J. L. Tallon, G. V. M. Williams

摘要:

我们已经计算了Bi2Sr2CuO6和Bi2Sr2CaCu2O8超导体的热电势使用ARPES衍生的分散体,与模型赝隙,和边缘费米液体散射率,具有相对于在范霍夫奇点(vHs)的能量最小。在整个相图中实现了与数据的良好拟合,从而确认了分散体,vHs的位置和扩散热势对声子阻力贡献的主导地位。

英文摘要:

We have calculated the thermopower of the Bi2Sr2CuO6 and Bi2Sr2CaCu2O8 superconductors using an ARPES-derived dispersion, with a model pseudogap, and a marginal-Fermi liquid scattering rate that has a minimum with respect to energy at the van Hove singularity (vHs). Good fits with data are achieved across the entire phase diagram, thus confirming the dispersions, the locations of the vHs and the dominance of the diffusion thermopower over the phonon drag contribution.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑