Topological Supercon

User guide

For a given input file containing symmetry operations and characters of irreducible representations for each band, the program perform several procedures to diagnose nodes and topology.

The input files for normal conducting phases (i.e., without Fermi energy) are generated by external programs: vasp2trace, irvsp, and qeirreps.

To generate input files for the superconducting phases, users should manually add the Fermi energy to the first line of the input. Please see README.pdf and Sample.txt.

If you use this program in your work, please cite the following references:
S. Ono, H.C. Po*, H. Watanabe*, Sci. Adv. 6, eaaz8367 (2020),
S. Ono, H.C. Po, K. Shiozaki, Phys. Rev. Research 3, 023086 (2021),
S. Ono, K. Shiozaki, Phys. Rev. X 12, 011021 (2022),
F. Tang*, S. Ono*, X. Wan, H. Watanabe, Phys. Rev. Lett. 129, 027001 (2022).
(* equally contributed)

If you have any trouble, please contact toposupercon[at]

We have confirmed the operation with Google Chrome [version 90.0.4430.93 (64bit)] browser and Microsoft Edge [version 90.0.818.51 (64bit)] browser under Windows10.

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Choose the conditions you consider

SC phase
normal phase?
normal SC (C2 = + 1) SC (C2 = − 1)
TRS Yes No
SOC Yes No