Abstract
We studied the effect of external pressure on the optical response of the nodal-line semimetal candidate ZrSiTe by reflectivity measurements. At pressures of a few GPa, the reflectivity, optical conductivity, and loss function are strongly affected in the whole measured frequency range (), indicating drastic changes in the electronic band structure. The pressure-induced shift of the electronic bands affects both the intraband and interband transitions. We find anomalies in the pressure dependence of several optical parameters at the pressures and , suggesting the occurrence of two phase transitions of either structural or electronic type.
- Received 3 May 2019
DOI:https://doi.org/10.1103/PhysRevB.99.245133
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