论文标题
诸如轻微掺杂的库酸酯超导体中的振荡之类的小公园
Little-Parks like oscillations in lightly doped cuprate superconductors
论文作者
论文摘要
了解铜酸盐超导体中富裕和竞争的电子订单可能会为高温超导性的机制提供重要的见解。在这里，通过测量极为低落的制度中的BI2SR2CACU2O8+X，我们获得了一种不同类型的有序的证据，这表现为在低磁场（<10 t）和超导过渡周围温度下的电阻振荡。通过连续调整掺杂水平P，我们揭示了这些低场振荡仅在p <0.1时发生。振荡振幅随着P的减少而增加，但振荡周期几乎保持恒定。我们表明，可以通过假设一个周期性超导结构的网格大小约为50 nm，可以很好地描述这些低场振荡。这样的电荷顺序与良好的电荷密度波和配对密度波有明显不同，似乎是丘比特相关物理学相关物理学的意外拼图。
Understanding the rich and competing electronic orders in cuprate superconductors may provide important insight into the mechanism of high-temperature superconductivity. Here, by measuring Bi2Sr2CaCu2O8+x in the extremely underdoped regime, we obtain evidence for a distinct type of ordering, which manifests itself as resistance oscillations at low magnetic fields (<10 T) and at temperatures around the superconducting transition. By tuning the doping level p continuously, we reveal that these low-field oscillations occur only when p<0.1. The oscillation amplitude increases with decreasing p but the oscillation period stays almost constant. We show that these low-field oscillations can be well described by assuming a periodic superconducting structure with a mesh size of about 50 nm. Such a charge order, which is distinctly different from the well-established charge density wave and pair density wave, seems to be an unexpected piece of the puzzle on the correlated physics in cuprates.
