Field-induced resistivity plateau and unsaturated negative magnetoresistance in topological semimetal TaSb2

Abstract

Several prominent transport properties have been identified as key signatures of topologicalmaterials. One is the resistivity plateau at low temperatures as observed in several topological insulators (TIs), another is the negative magnetoresistance (MR) when the applied magnetic field is parallel to the current direction as observed in several topological semimetals (TSMs) including Dirac semimetals (DSMs) and Weyl semimetals (WSMs). Usually, these two exotic phenomena emerge in distinct materials with or without time reversal symmetry (TRS), respectively. Here we report the discovery of a new member in TSMs, TaSb2, which clearly exhibits both of these phenomena in a single material. This compound crystallizes in a base-centered monoclinic, centrosymmetric structure, and is metallic with a low carrier density in the zero field. While applying magnetic field it exhibits insulating behavior before appearance of a resistivity plateau below Tc =13 K. In the plateau regime, the ultrahigh carrier mobility and extreme magnetoresistance (XMR) for the field perpendicular to the current are observed as in DSMs and WSMs, in addition to a quantum oscillation behavior with non-trivial Berry phases. In contrast to the most known DSMs and WSMs, the negative MR in TaSb2 does not saturate up to 9 T, which, together with the almost linear Hall resistivity, manifests itself an electron-hole non-compensated TMS. These findings indicate that the resistivity plateau could be a generic feature of topology-protected metallic states even in the absence of TRS and compatible with the negative MR depending on the field direction. Our experiment extends a materials basis represented by TaSb2 as a new platform for future theoretical investigations and device applications of topological materials.

21pages,3figures

References in corpus (24)

• Topological Insulators with Inversion Symmetry
• Discovery of a Weyl Fermion Semimetal and Topological Fermi Arcs
• Experimental discovery of Weyl semimetal TaAs
• Titanic Magnetoresistance in WTe2
• Theoretical Discovery/Prediction: Weyl Semimetal states in the TaAs material (TaAs, NbAs, NbP, TaP) class
• Observation of the chiral anomaly induced negative magneto-resistance in 3D Weyl semi-metal TaAs
• Weyl semimetal phase in non-centrosymmetric transition metal monophosphides
• Negative magnetoresistance without well-defined chirality in the Weyl semimetal TaP
• Extremely large magnetoresistance and ultrahigh mobility in the topological Weyl semimetal NbP
• Observation of the chiral magnetic effect in ZrTe5
• Discovery of a Weyl Fermion semimetal state in NbAs
• Negative Magnetoresistance in Dirac Semimetal Cd3As2
• Giant negative magnetoresistance induced by the chiral anomaly in individual Cd3As2 nanowires
• Correlated Topological Insulators with Mixed Valence
• Consequences of breaking time reversal symmetry in LaSb: a resistivity plateau and extreme magnetoresistance
• Metal-Insulator-Like Behavior in Semimetallic Bismuth and Graphite
• Helicity protected ultrahigh mobility Weyl fermions in NbP
• Anisotropic giant magnetoresistance in NbSb2
• On the search for the chiral anomaly in Weyl semimetals: The negative longitudinal magnetoresistance
• Magnetotransport of single crystalline YSb
• Unsaturated both large positive and negative magnetoresistance in Weyl Semimetal TaP
• Magnetotransport of single crystalline NbAs
• Topological semimetals and topological insulators in rare earth monopnictides
• Observation of the Adler-Bell-Jackiw chiral anomaly in a Weyl semimetal

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