Magnetotransport signatures of chiral magnetic anomaly in the half-Heusler phase ScPtBi

Abstract

Study of magnetotransport properties of ScPtBi revealed simultaneously: a negative contribution to the longitudinal magnetoresistance, the planar Hall effect, and distinct angular narrowing of the longitudinal magnetoresistance { three hallmarks of chiral magnetic anomaly (pumping of axial charge between Weyl nodes), a distinct property of topological semimetals. Electronic structure calculations show that structural defects, such as antisites and vacancies, bring substantial density of states at the Fermi level of ScPtBi, indicating that it is a semimetal, not a zero-gap semiconductor, as predicted earlier. This is in accord with electrical resistivity in ScPtBi, showing no characteristics of semiconductor. Moreover, below 0.7K we observed an onset of a superconducting transition, with the resistivity disappearing completely below 0.23 K.

arXiv comment17 pages, 5 figures, +(Supplemental Material: 13 pages, 9 figures)

References in corpus (33)

• Weyl and Dirac Semimetals in Three Dimensional Solids
• Observation of the chiral anomaly induced negative magneto-resistance in 3D Weyl semi-metal TaAs
• Chiral Anomaly and Classical Negative Magnetoresistance of Weyl Metals
• Observation of the chiral magnetic effect in ZrTe5
• Tunable Multifunctional Topological Insulators in Ternary Heusler Compounds
• Signatures of the Adler-Bell-Jackiw chiral anomaly in a Weyl Fermion semimetal
• The chiral anomaly and thermopower of Weyl fermions in the half-Heusler GdPtBi
• Dirac vs. Weyl in topological insulators: Adler-Bell-Jackiw anomaly in transport phenomena
• Electronic Evidence of Temperature-Induced Lifshitz Transition and Topological Nature in ZrTe5
• Giant Planar Hall Effect in Topological Metals
• Superconductivity in the topological semimetal YPtBi
• Temperature induced Lifshitz transition in WTe2
• Topological $R$PdBi half-Heusler semimetals: a new family of non-centrosymmetric magnetic superconductors
• Anomalous Hall effect in Weyl semimetal half Heusler compounds RPtBi (R = Gd and Nd)
• Planar Hall effect in the Weyl semimetal GdPtBi
• Experimental tests of the chiral anomaly magnetoresistance in the Dirac-Weyl semimetals Na${}_3$Bi and GdPtBi
• Density Functional Application to Strongly Correlated Electron Systems
• Tantalum Monoarsenide: an Exotic Compensated Semimetal
• Electron scattering in tantalum monoarsenide
• Giant anisotropic magnetoresistance and planar Hall effect in the Dirac semimetal Cd3As2
• Weak antilocalization and localization in disordered and interacting Weyl semimetals
• Non-saturating magnetoresistance of inhomogeneous conductors: comparison of experiment and simulation
• Shubnikov-de Haas oscillations, weak antilocalization effect and large linear magnetoresistance in the putative topological superconductor LuPdBi
• Lifshitz transition mediated electronic transport anomaly in bulk ZrTe5
• Antiferromagnetism and superconductivity in the half-Heusler semimetal HoPdBi
• Evidence for Weyl fermions in a canonical heavy-fermion semimetal YbPtBi
• Planar Hall effect in type II Dirac semimetal VAl${}_3$
• Magnetic field tuned quantum criticality of heavy fermion system YbPtBi
• Superconductivity in half-Heusler compound TbPdBi
• High Electron Mobility and Large Magnetoresistance in the Half-Heusler Semimetal LuPtBi
• Large low-field positive magnetoresistance in nonmagnetic half-Heusler ScPtBi single crystal
• Detecting monopole charge in Weyl semimetals via quantum interference transport
• Negative longitudinal magnetoresistance as a sign of a possible chiral magnetic anomaly in the half-Heusler antiferromagnet DyPdBi

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• Weak antilocalization effect and triply degenerate state in Cu-doped CaAuAs
• Severe violation of the Wiedemann-Franz law in quantum oscillations of NbP
• Insulating Half-Heusler TmPdSb with Unusual Band Order and Metallic Surface States
• Tuning of anomalous magnetotransport properties in half-Heusler topological semimetal GdPtBi
• Anomalous magnetotransport in the single-crystalline half-Heusler antiferromagnet ErPdSb
• Magnetic and electrical transport properties of the single-crystalline half-Heusler antiferromagnet DyNiSb