ZrSiS as a theoretically predicted and experimentally proven Dirac semimetal, exhibiting Fermi liquid behavior with two Fermi pockets at low temperatures. It sustains Weyl fermions when magnetic field is applied. It has been also shown that it may evolve to a topological insulator under the external stimuli. ZrSiS crystallizes in tetragonal phase (space group P4/nmm) with lattice parameters of a=b=3.545?? and c=8.05??. The crystal structure of ZrSiS can be described as a typical layered compound of quintuple layers of S-Zr-Si-Zr-S. Each order contains 2-3 pieces of few mm sized (2-3mm) crystals that are perfectly oriented in their basal plane for easy and efficient exfoliation process, STM / ARPES characterization, and electronic measurements.

Material properties of ZrSiS crystals: 

Dirac semimetal, Weyl fermion, and topological insulator

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