arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0704.0599cond-mat.supr-concond-mat.str-el
收藏

铜氧化物的X射线二向色性和赝隙相

X-ray Dichroism and the Pseudogap Phase of Cuprates

S. Di Matteo, M. R. Norman

摘要:

最近对高温铜酸盐超导体Bi_2Sr_2CaCu_2 O_8的极化X射线吸收实验表明,在T ~* 以下存在宇称对称性破缺,在T ~* 以下出现赝能隙。我们批判性地分析了X射线数据,并得出结论,宇称打破信号的那种建议是不可能的基础上,在文献中报道的晶体结构。可能的其他来源所观察到的二向色性信号进行了讨论。我们提出了X射线散射实验,可以做,以确定这种替代解释是否有效或不。

英文摘要:

A recent polarized x-ray absorption experiment on the high temperature cuprate superconductor Bi2Sr2CaCu2O8 indicates the presence of broken parity symmetry below the temperature, T*, where a pseudogap appears in photoemission. We critically analyze the x-ray data, and conclude that a parity-breaking signal of the kind suggested is unlikely based on the crystal structures reported in the literature. Possible other origins of the observed dichroism signal are discussed. We propose x-ray scattering experiments that can be done in order to determine whether such alternative interpretations are valid or not.

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。

↑