内容简介：

High-temperature superconductors are layered materials. The interlayer transport provides a unique and susceptive probe to the superconducting mechanism since it is controlled by excitations with momenta for which the superconducting gap is maximal. I will show that the interlayer dynamics is governed entirely by the pseudogap energy and the c-axis resistivity satisfies a universal scaling law in the pseudogap phase. It indicates that the superconducting pairing is intimately connected with the pseudogap and the interlayer hopping is coherent.