Magnetic Field Inducing Zeeman Splitting and Anomalous Conductance Reduction of Half-integer Quantized Plateaus in InAs Quantum Wires

Abstract

We report on magnetic field dependence of half-integer quantized conductance plateaus (HQPs) in InAs quantum wires. We observed HQPs at zero applied magnetic field in InAs quantum wires fabricated from a high-quality InAs quantum well. The application of in-plane magnetic field causes Zeeman splitting of the HQP features, indicating that the origin of the observed HQP is not spontaneous spin polarization. Additionally we observe that conductance of the split HQPs decreases gradually as the in-plane magnetic field increases. We finally assume electron-electron interaction as a possible mechanism to account for the zero-field HQPs and the anomalous field dependence.

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Cited by in corpus (6)

• Strong Electron-Electron Interactions of a Tomonaga--Luttinger Liquid Observed in InAs Quantum Wires
• A Gate-Defined Quantum Point Contact in an InAs Two-Dimensional Electron Gas
• Quantized critical supercurrent in SrTiO${}_3$-based quantum point contacts
• Helical transport in coupled resonator waveguides
• Edgeless and Purely Gate-Defined Nanostructures in InAs Quantum Wells
• Clean quantum point contacts in an InAs quantum well grown on a lattice-mismatched InP substrate