高温超导体中量子线的SUPERSTRIPES自组织
SUPERSTRIPES Self organization of quantum wires in high Tc superconductors
摘要：
我们报告的实验证据的掺杂铜酸盐超导体的相图作为一个功能的微观应变（e）的Cu-O键长，测量铜K边EXAFS，和空穴掺杂（d）。该相图示出了在P（e*，d*）处的QCP，其中对于大于临界值e* 的微应变e，电荷轨道自旋条纹和自由载流子共存。超导相发生在该QCP附近的临界涨落区域。临界温度是两个变量的函数，并且在应变驱动QCP处Tc显示其最大值。这个应变QCP附近的临界波动给出了量子线的金属超晶格“超级条纹”的自组织，其有利于临界温度的放大。
英文摘要：
We report experimental evidence for the phase diagram of doped cuprate superconductors as a function of the micro-strain (e) of the Cu-O bond length, measured by Cu K-edge EXAFS, and hole doping (d). This phase diagram shows a QCP at P(e*,d*) where for the micro-strain e larger than the critical value e* charge-orbital-spin stripes and free carriers co-exist. The superconducting phase occurs in the region of critical fluctuations around this QCP. The critical temperature is function of two variables and Tc shows its maximum at the strain driven QCP. The critical fluctuations near this strain QCP give the self-organization of a metallic superlattice of quantum wires "superstripes" that favors the amplification of the critical temperature.
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