Electronic orders in cuprate high temperature superconductors

The mechanism of cuprate high temperature superconductivity has remained a mystery in modern condensed physics, since its discovery 30 years ago. In recent years, novel electronic orders other than superconductivity has been observed in cuprates, including spin,charge, and Cooper pair orders. The physical origin of these orders and their relation to the pseudogap and superconducting state may play important roles in unveiling the mechanism of high temperature superconductivity. Here we will briefly summarize the experimental results on these issues.