Number of CuO2 layers dependence of magnetic quantum criticality in homogeneously doped high-Tc copper oxides: A 63Cu-NMR study on four-layered high-Tc compounds HgBa2Ca3Cu4O8+y
1. Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan;2. National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8568, Japan