Two Types of 3D Quantum Hall Effects in Multilayer WTe${}_2$

Abstract

Interplay between the topological surface states and bulk states gives rise to diverse exotic transport phenomena in topological materials. The recently proposed Weyl orbit in topological semimetals in the presence of magnetic field is a remarkable example. This novel closed magnetic orbit consists of Fermi arcs on two spatially separated sample surfaces which are connected by the bulk chiral zero mode, which can contribute to transport. Here we report Shubnikov-de Haas (SdH) oscillation and its evolution into quantum Hall effect (QHE) in multilayered type-II Weyl semimetal WTe2. We observe both the three-dimensional (3D) QHE from bulk states by parallelly stacking of confined two-dimensional layers in the low magnetic field region and the 3D QHE in the quantized surface transport due to Weyl orbits in the high magnetic field region. Our study of the two types of novel QHEs controlled by magnetic field and our demonstration of the crossover between quantized bulk and surface transport provide an essential platform for the future quantized transport studies in topological semimetals.

References in corpus (16)

• Topological Insulators with Inversion Symmetry
• Quantum Spin Hall Effect and Topological Field Effect Transistor in Two-Dimensional Transition Metal Dichalcogenides
• Titanic Magnetoresistance in WTe2
• Observation of the Quantum Spin Hall Effect up to 100 Kelvin in a Monolayer Crystal
• Observation of topological surface state quantum Hall effect in an intrinsic three-dimensional topological insulator
• Electronic structure basis for the titanic magnetoresistance in WTe${}_2$
• Quantum Hall effect in a bulk antiferromagnet EuMnBi${}_2$ with magnetically confined two-dimensional Dirac fermions
• Quantum Hall states observed in thin films of Dirac semimetal Cd3As2
• 3D Quantum Hall Effect Manipulated by Chiral Landau Levels in Weyl Semimetals
• Approaching Three-Dimensional Quantum Hall effect in Bulk HfTe5
• Perspective: 3D quantum Hall effect
• Understanding the three-dimensional quantum Hall effect in generic multi-Weyl semimetals
• Crossover Between Weak Antilocalization and Weak Localization and Electron-Electron Interaction in Few-Layer WTe${}_2$
• Anisotropic three-dimensional quantum Hall effect and magnetotransport in mesoscopic Weyl semimetals
• Thickness Dependence of Magneto-transport Properties in Tungsten Ditelluride
• Time-reversal-broken Weyl semimetal in the Hofstadter regime

Cited by in corpus (3)

• Fractional Quantum Hall Effect Based on Weyl Orbits
• Electronic band structure from quasiparticle interference and Landau quantization in WTe${}_2$
• Transitions from Composite Fermi Liquid to Moore-Read States in Weyl Semimetals