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Superconductivity in monolayers. Currently, 2D aspect of this material remains largely unexplored. Iron Selenide (FeSe) is a member of layered materials. FeSe is considered as the parent material of the simplest family of iron-based superconductors. The crystal structure of iron selenide consists of a continuous stacking of FeSe layers, where a square-lattice layer of iron atoms is sandwiched between two twice-sparser layers of bonding chalcogen atoms with in P4nmm space group. Overall, this crystal is similar to other popular layered materials such as graphite, graphene, MoS₂, etc. with weak interlayer coupling. Recently, it has been reported that the FeSe monolayers become superconducting at 65K > Interface-induced superconductivity and strain-dependent spin density waves in FeSe/SrTiO₃ thin films (Nature Materials 2013 doi:10.1038/nmat3654) >Phase diagram and electronic indication of high-temperature superconductivity at 65 K in single-layer FeSe films Nature Materials 2013 doi:10.1038/nmat3648) The crystal has been developed in 2012 in our state-of-art facilities. The crystals come fully characterized, and ready for exfoliation.

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