Electronic Transport Evidence for Topological Nodal-Line Semimetals of ZrGeSe single crystals

Abstract

Although the band topology of ZrGeSe has been studied via magnetic torque technique, the electronic transport behaviors related to the relativistic Fermions in ZrGeSe are still unknown. Here, we first report systematic electronic transport properties of high-quality ZrGeSe single crystals under magnetic fields up to 14 T. Resistivity plateaus of temperature dependent resistivity curves both in the presence and absence of magnetic fields as well as large, non-saturating magnetoresistance in low-temperature region were observed. By analyzing the temperature- and angular-dependent Shubnikov-de Haas oscillations and fitting it via the Lifshitz-Kosevich (LK) formula with the Berry phase being taken into account, we proved that Dirac fermions dominate the electronic transport behaviors of ZrGeSe and the presence of non-trivial Berry phase. First principles calculations demonstrate that ZrGeSe possesses Dirac bands and normal bands near Fermi surface, resulting in the observed magnetotransport phenomena. These results demonstrate that ZrGeSe is a topological nodal-line semimetal, which provides a fundamentally important platform to study the quantum physics of topological semimetals.

arXiv comment21 pages, 6 figures

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• The Emerging Weak Antilocalization Effect in Semimetal Ta${}_{0.7}$Nb${}_{0.3}$Sb${}_2$ Single Crystal
• Dispersive Drumhead States in Nodal-Line Semimetal Junctions
• Spin and charge transport in topological nodal-line semimetals
• Revealing a charge-density-wave gap in the predicted weak topological insulator HoSbTe
• Magnetotransport and Berry phase Tuning in Gd-doped Bi2Se3 Topological Insulator Single Crystals
• Crossing points of nodal lines in topological semimetals and Fermi surface of ZrSiS
• Magnetotransport Properties of Square-Net Compounds of NbSiSb and NbGeSb Single Crystals
• Nodal-line semimetals and their variance
• Sign reversal of magnetoresistivity in massive nodal-line semimetals due to Lifshitz transition of Fermi surface
• Magnetic susceptibility of crystals with crossing of their band-contact lines