Unconventional High Temperature Superconductivity in Cubic Zinc-blende Transition Metal Compounds*

Recently, we have identified a key character, called high temperature superconductivity "gene", which separates the cuprates and iron-based superconductors from other transitional metal compounds, and proposed some candidates for unconventional superconductivity. All of them are quasi-two dimensional. Here we propose a three dimensional candiate, transition metal compounds in a cubic zinc-blende lattice with electronic filling d^7. We argue that upon doping, this electronic environment can be one of ``genes" to host unconventional high temperature superconductivity with a time reversal symmetry broken d+id pairing symmetry. With gappless nodal points along the diagonal directions, this state is a direct three dimensional analogue to the two dimensional B1g d-wave state in cuprates. We suggest that such a case may be realized in electron doped zinc-blende CoN.
Ref: arXiv:1910.10904