ZrSiS Crystal

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 Å and c=8.05 Å. The crystal structure of ZrSiS can be described as a typical layered compound of quintuple layers of S-Zr-Si-Zr-S but exhibits rather strong interlayer bonding with hard exfoliation characteristics. Each order contains 2-3 pieces of few mm sized (2-3mm) crystals that are ready for electronic, STM / ARPES characterizations. 

Material properties of ZrSiS crystals: Dirac semimetal, superconducting, Weyl fermion, and topological insulator