The Chiral Anomaly and Ultrahigh Mobility in Crystalline HfTe5

Abstract

HfTe5 is predicted to be a promising platform for studying topological phases. Here through an electrical transport study, we present the first observation of chiral anomaly and ultrahigh mobility in HfTe5 crystals. Negative magneto-resistivity in HfTe5 is observed when the external magnetic and electrical fields are parallel (B//E) and quickly disappears once B deviates from the direction of E. Quantitative fitting further confirms the chiral anomaly as the underlying physics. Moreover, by analyzing the conductivity tensors of longitudinal and Hall traces, ultrahigh mobility and ultralow carrier density are revealed in HfTe5, which paves the way for potential electronic applications.

References in corpus (6)

• Signatures of the Adler-Bell-Jackiw chiral anomaly in a Weyl Fermion semimetal
• Chiral anomaly and transport in Weyl metals
• Negative longitudinal magnetoresistance in Dirac and Weyl metals
• Observation of the Adler-Bell-Jackiw chiral anomaly in a Weyl semimetal
• Chiral anomaly induced negative magnetoresistance in topological Weyl semimetal NbAs
• Correlation of Crystal Quality and Extreme Magnetoresistance of WTe${}_2$

Cited by in corpus (27)

• Tunability of the topological nodal-line semimetal phase in ZrSiX-type materials
• Quantum Transport in Topological Semimetals under Magnetic Fields
• Large, nonsaturating thermopower in a quantizing magnetic field
• Negative Magnetoresistance without Chiral Anomaly in Topological Insulators
• Lifshitz transition mediated electronic transport anomaly in bulk ZrTe5
• Bipolar Conduction is the Origin of the Electronic Transition in Pentatellurides: Metallic vs. Semiconducting Behavior
• Pressure-driven Superconductivity in Transition-metal Pentatelluride HfTe5
• Weyl fermions with arbitrary monopole in magnetic fields: Landau levels, longitudinal magnetotransport, and density-wave ordering
• Approaching Three-Dimensional Quantum Hall effect in Bulk HfTe5
• Berry curvature induced magnetotransport in 3D noncentrosymmetric metals
• Quantum Transport in Topological Semimetals under Magnetic Fields (II)
• Electron Transport in Dirac and Weyl Semimetals
• Induced anomalous Hall effect of massive Dirac fermions in ZrTe5 and HfTe5 thin flakes
• Negative longitudinal magnetoresistance in GaAs quantum wells
• Towards the manipulation of topological states of matter: A perspective from electron transport
• Log-periodic quantum magneto-oscillations and discrete scale invariance in topological material HfTe5
• From Dirac semimetals to topological phases in three dimensions: a coupled wire construction
• Abundant surface-semimetal phases in three-dimensional obstructed atomic insulators
• Berry curvature induced anisotropic magnetotransport in a quadratic triple-component fermionic system
• Magnetic-field-induced nonlinear transport in HfTe5
• Transversal magnetotransport in Weyl semimetals: Exact numerical approach
• Semiclassical Boltzmann magnetotransport theory in anisotropic systems with a nonvanishing Berry curvature
• Tunable discrete scale invariance in transition-metal pentatelluride flakes
• Discrete scale invariance of the quasi-bound states at atomic vacancies in a topological material
• Materials and possible mechanisms of extremely large magnetoresistance: A review
• Effect of pressure on the transport properties and thermoelectric performance of Dirac semimetal ZrTe5
• Theory for the negative longitudinal magnetoresistance in the quantum limit of Kramers Weyl semimetals