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arXiv · 2503.02964

Quantum oscillation studies of the nodal line semimetal Ni3In2S2-xSex

M. M. Sharma·Santosh Karki Chhetri·Gokul Acharya·David Graf·Dinesh Upreti·Sagar Dahal·Md Rafique Un Nabi·Sumaya Rahman·Josh Sakon·Hugh O. H. Churchill·Jin Hu
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Abstract

Ternary shandite compounds with the general formula T3M2X2 (T = Ni, Co, Rh or Pd; M = Sn, In or Pb and X = S or Se) have emerged as a large pool of topological semimetals. This family of compounds hosts different topological phases for various combinations of T, M and X. This paper reports the observation of quantum oscillations under the high magnetic fields in Ni3In2S2-xSex single crystals. Angular dependence of oscillation frequency suggests an evolution of the Fermi surface from three-dimensional to two-dimensional on Se substitution for S in Ni3In2S2. The effective mass obtained for each composition by fitting the oscillation amplitude with the Lifshitz-Kosevich formula, shows no significant change, suggesting that the topological phase might be relatively robust against enhanced SOC upon Se doping in Ni3In2S2.

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M. M. Sharma, Santosh Karki Chhetri, Gokul Acharya, David Graf, Dinesh Upreti, Sagar Dahal, Md Rafique Un Nabi, Sumaya Rahman, Josh Sakon, Hugh O. H. Churchill, Jin Hu. 2025-03-04. Quantum oscillation studies of the nodal line semimetal Ni3In2S2-xSex. https://doi.org/10.1016/j.actamat.2025.120884

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