Negative magnetoresistance suppressed through topological phase transition in (Cd1-xZnx)3As2 films

Abstract

The newly discovered topological Dirac semimetals host the possibilities of various topological phase transitions through the control of spin-orbit coupling as well as symmetries and dimensionalities. Here, we report a magnetotransport study of high-mobility (Cd1-xZnx)3As2 films, where the topological Dirac semimetal phase can be turned into a trivial insulator via chemical substitution. By high-field measurements with a Hall-bar geometry, magnetoresistance components ascribed to the chiral charge pumping have been distinguished from other extrinsic effects. The negative magnetoresistance exhibits a clear suppression upon Zn doping, reflecting decreasing Berry curvature of the band structure as the topological phase transition is induced by reducing the spin-orbit coupling.

arXiv comment16 pages, 6 figures

References in corpus (23)

• Discovery of a Three-dimensional Topological Dirac Semimetal, Na3Bi
• Dirac semimetal and topological phase transitions in A3Bi (A=Na, K, Rb)
• Three Dimensional Dirac Semimetal and Quantum Transports in Cd3As2
• Observation of a topological 3D Dirac semimetal phase in high-mobility Cd3As2
• Chiral Anomaly and Classical Negative Magnetoresistance of Weyl Metals
• Quantum Transport in Semiconductor Nanostructures
• Classification of stable three-dimensional Dirac semimetals with nontrivial topology
• Topological Phase Transition and Texture Inversion in a Tunable Topological Insulator
• Negative Magnetoresistance in Dirac Semimetal Cd3As2
• Giant negative magnetoresistance induced by the chiral anomaly in individual Cd3As2 nanowires
• Transport evidence for Fermi-arc mediated chirality transfer in the Dirac semimetal Cd${}_3$As${}_2$
• Chiral Anomaly and Diffusive Magnetotransport in Weyl Metals
• Giant intrinsic spin Hall effect in the TaAs family of Weyl semimetals
• Axial anomaly and longitudinal magnetoresistance of a generic three dimensional metal
• On the search for the chiral anomaly in Weyl semimetals: The negative longitudinal magnetoresistance
• Quantum Hall states observed in thin films of Dirac semimetal Cd3As2
• Aharonov-Bohm oscillations in Dirac semimetal Cd3As2 nanowires
• Room-temperature chiral charge pumping in Dirac semimetals
• Negative magnetoresistance due to conductivity fluctuations in films of the topological semimetal Cd3As2
• Negative longitudinal magnetoresistance from anomalous N=0 Landau level in topological materials
• Topological Phase Transition in Single Crystals of $(C{d}_{1-x}Z{n}_x{)}_{3}A{s}_2$
• Structural characterisation of high-mobility Cd3As2 films crystallised on SrTiO3
• Axial Current driven by Magnetization Dynamics in Weyl Semimetals

Cited by in corpus (11)

• Quantized surface transport in topological Dirac semimetal films
• Topological Hall effect in the antiferromagnetic Dirac semimetal EuAgAs
• Molecular beam epitaxy of three-dimensionally thick Dirac semimetal Cd3As2 films
• Observation of sub-kelvin superconductivity in Cd${}_3$As${}_2$ thin films
• Robustness of anomaly-related magnetoresistance in doped Weyl semimetals
• Enhancement of spin-orbit coupling in Dirac semimetal Cd${}_3$As${}_2$ films by Sb-doping
• Semiclassical Boltzmann magnetotransport theory in anisotropic systems with a nonvanishing Berry curvature
• Doping-induced topological transition and enhancement of thermopower in the Dirac-semimetal system Cd${}_{3-x}$Zn${}_x$As${}_2$
• Enhancement of the Thermoelectric Figure of Merit in the Dirac Semimetal Cd${}_3$As${}_2$ by Band-Structure and -Filling Control
• Singular nonlinear response in metals due to divergent Berry curvature: application to magneto-resistance in metals with type-II Weyl nodes
• Edge and bulk states in Weyl-orbit quantum Hall effect as studied by Corbino measurements