Spin Freezing Crossover and Cooper Pairing Symmetry in the Organic Strange Metal kappa-(ET)4Hg2.89Br8 and kappa-(ET)4Hg2.78Cl8

今年，我们首次(在垂直模式下)对k-HgBr进行了横场MuSR实验，得到了面内穿透深度有序参数。为了提高信噪比，有必要进行额外的测量。我们批准了下面的MuSR方案，并计划增加样品质量。在k-HgCl零场MuSR测量中，我们还首次在k-HgCl25Milik进行了测量。此外，我们还开发了一种测量该系列样品(板状晶体)的直流磁化率的技术，以得到磁化率随温度的变化关系。我们的目标是报告Muon Knight位移与磁化率的关系图，并将其与k-HgBr和k-HgCl中的图进行比较。

In this year we have performed Transverse-field muSR experiment on k-HgBr for the first time (in the perpendicular mode) obtaining in-plane penetration depth order parameter. The additional measurement is necessary to improve signal-noise ratio. We got our following muSR proposal approved and plan to add the sample mass.In the k-HgCl Zero-field muSR measurement also has been done in k-HgCl down to 25 miliK for the first time. There is no obvious signature of long-range ordered.Furthermore, we have developed a technique to measure dc-susceptibility for this series samples (plate-like shape crystal) to get a precise temperature dependence of susceptibility. We aim to report the plot of muon Knight shift vs susceptibility, comparing between those in k-HgBr and k-HgCl.