Nonlinear planar magnetotransport due to tilted Dirac cones in topological materials
arXiv:2307.08645 · doi:10.1021/acs.nanolett.3c01508
Abstract
Nonlinear planar magnetotransport is ubiquitous in topological HgTe structures, both in tensile (topological insulator) or compressively strained layers (Weyl semimetal phase). We show that the common reason for the nonlinear planar magnetotransport is the presence of tilted Dirac cones combined with the formation of charge puddles. The origin of the tilted Dirac cones is the mix of the Zeeman term due to the in-plane magnetic field and quadratic contributions to the dispersion relation. We develop a network model that mimics transport of tilted Dirac fermions in the landscape of charge puddles. The model captures the essential features of the experimental data. It should be relevant for nonlinear planar magnetotransport in a variety of topological and small band gap materials.
arXiv comment12 pages, 11 figures, 1 table
References in corpus (20)
- Quantum nonlinear Hall effect induced by Berry curvature dipole in time-reversal invariant materials
- Nonlocal edge state transport in the quantum spin Hall state
- Quantum Hall Effect from the Topological Surface States of Strained Bulk HgTe
- Spin polarization of the quantum spin Hall edge states
- Symmetry-protected ideal Weyl semimetal in HgTe-class materials
- Planar Hall effect from the surface of topological insulators
- Bilinear magneto-electric resistance as a probe of three-dimensional spin texture in topological surface states
- Unexpected edge conduction in HgTe quantum wells under broken time reversal symmetry
- Why is the bulk resistivity of topological insulators so small?
- Spatially resolved study of backscattering in the quantum spin Hall state
- Gigantic magnetochiral anisotropy in the topological semimetal ZrTe5
- Current induced anisotropic magnetoresistance in topological insulator films
- Anisotropic and strong negative magneto-resistance in the three-dimensional topological insulator Bi2Se3
- Parallel field magnetoresistance in topological insulator thin films
- Strain Engineering of the Band Gap of HgTe Quantum Wells using Superlattice Virtual Substrates
- Giant magnetochiral anisotropy from quantum confined surface states of topological insulator nanowires
- Dynamical separation of bulk and edge transport in HgTe-based 2D topological insulators
- Interplay of Dirac nodes and Volkov-Pankratov surface states in compressively strained HgTe
- Length scale of puddle formation in compensation-doped semiconductors and topological insulators
- Hyers-Ulam stability of elliptic Möbius difference equation