Strain effects in topological semimetal ZrSiS

Topological phases in materials are intimately linked to the symmetry of the crystal lattice. Understanding the effect of symmetry breaking on the electronic properties allows for tuning of the topological properties and enables the study of novel quantum phenomena. ZrSiS is a topological semimetal showing coexistence of mirror symmetry and non-symmorphic symmetry-protected Dirac states. The four-fold rotational symmetry of the lattice can be broken by applying a uniaxial strain and consequently affect the topological bands. Here, we present transport measurements on single crystal ZrSiS as a function of uniaxial strain. The effect of strain on the Shubnikov de Haas (SdH) oscillations provides evidence that the topological phase can be tuned by strain.