The room temperature ferromagnetism in highly strained two-dimensional magnetic semiconductors

<正>In spintronics, it is still a challenge in experiments to realize the ferromagnetic semiconductors with Curie temperature Tc above room temperature. In 2017, the successful synthesis of two-dimensional（2D） van der Waals ferromagnetic semiconductors, including the monolayer CrI3 with Tc = 45 K[1]and the bilayer Cr2Ge2Te6 with Tc = 28 K[2] in experiments,has attracted extensive attention in the 2D ferromagnetic semiconductors. One of the key problems is to find suitable 2D magnetic semiconductors, which can have room-temperature operation as required in applications.