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arXiv · 2405.13601

Uniaxial strain effects on the Fermi surface and quantum mobility of the Dirac nodal-line semimetal ZrSiS

J. P. Lorenz·J. F. Linnartz·A. Kool·M. R. van Delft·W. Guo·I. Aguilera·R. Singha·L. M. Schoop·N. E. Hussey·S. Wiedmann·A. de Visser
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Abstract

ZrSiS has been identified as an exemplary Dirac nodal-line semimetal, in which the Dirac band crossings extend along a closed loop in momentum space. Recently, the topology of the Fermi surface of ZrSiS was uncovered in great detail by quantum oscillation studies. For a magnetic field along the tetragonal $c$ axis, a rich frequency spectrum was observed stemming from the principal electron and hole pockets, and multiple magnetic breakdown orbits. In this work we use uniaxial strain as a tuning parameter for the Fermi surface and the low energy excitations. We measure the magnetoresistance of a single crystal under tensile (up to 0.34 %) and compressive (up to -0.28 %) strain exerted along the $a$ axis and in magnetic fields up to 30 T. We observe a systematic weakening of the peak structure in the Shubnikov-de Haas frequency spectrum upon changing from compressive to tensile strain. This effect may be explained by a decrease in the effective quantum mobility upon decreasing the $c/a$ ratio, which is corroborated by a concurrent increase in the Dingle temperature.

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J. P. Lorenz, J. F. Linnartz, A. Kool, M. R. van Delft, W. Guo, I. Aguilera, R. Singha, L. M. Schoop, N. E. Hussey, S. Wiedmann, A. de Visser. 2024-05-22. Uniaxial strain effects on the Fermi surface and quantum mobility of the Dirac nodal-line semimetal ZrSiS. https://arxiv.org/abs/2405.13601

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