Linear magnetoresistance in HgTe quantum wells

Abstract

We report magnetotransport measurements in a HgTe quantum well with an inverted band structure, which is expected to be a two-dimensional (2D) topological insulator. A small magnetic field perpendicular the 2D layer breaks the time reversal symmetry and thereby, suppresses the edge state transport. A linear magnetoresistance is observed in low magnetic fields, when the chemical potential moves through the the bulk gap. That magnetoresistance is well described by numerical calculations of the edge states magnetotransport in the presence of nonmagnetic disorder. With magnetic field increasing the resistance, measured both in the local and nonlocal configurations first sharply decreases and then increases again in disagreement with the existing theories.

arXiv comment5 pages, 4 figures

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Cited by in corpus (24)

• Magnetoresistance in two-component systems
• Persistence of two-dimensional topological insulator state in wide HgTe quantum well
• Linear magnetoresistance in a quasi-free two dimensional electron gas in an ultra-high mobility GaAs quantum well
• Magnetoresistance of compensated semimetals in confined geometries
• Linear magnetoresistance in compensated graphene bilayer
• Nonmonotonic magnetoresistance of a two-dimensional viscous electron-hole fluid in a confined geometry
• Temperature-driven transition from a semiconductor to a topological insulator
• Mesoscopic transport in two-dimensional topological insulators
• Pressure-Induced Insulator-to-Metal Transition in van der Waals compound CoPS${}_3$
• Topological protection brought to light by the time-reversal symmetry breaking
• Probing topological transitions in HgTe/CdTe quantum wells by magneto-optical measurements
• Counterflows in viscous electron-hole fluid
• Topological insulators based on HgTe
• Low-Temperature Conductivity of Weakly Interacting Quantum Spin Hall Edges in Strained-Layer InAs/GaInSb
• Interplay of chiral and helical states in a Quantum Spin Hall Insulator lateral junction
• Two-dimensional topological insulator state in double HgTe quantum well
• Magnetotransport in disordered two-dimensional topological insulators: signatures of charge puddles
• Aharonov Bohm effect in 2D topological insulator
• Protection of Edge transport in Quantum Spin Hall samples: Spin-Symmetry Based General Approach and Examples
• Tunable spin-polarized edge transport in inverted quantum-well junctions
• Magnetoresistance in the in-plane magnetic field induced semi-metallic phase of inverted HgTe quantum wells
• Two dimensional topological insulator in quantizing magnetic fields
• The Future of the Correlated Electron Problem
• Magnetotransport in a 2D Hybrid Band System: Dirac and Heavy Hole Interplay