Magnetic field inducing Zeeman splitting and anomalous conductance reduction of half-integer quantized plateaus in InAs quantum wires

Article

关键词: DIMENSIONAL ELECTRON-GAS;    POINT CONTACTS;    MAJORANA FERMIONS;    LUTTINGER LIQUID;    SUPERCONDUCTOR;    NANOWIRE;    COLLOQUIUM;    SIGNATURE;    BIAS;   

DOI  :  10.1103/PhysRevB.96.201404

来源: SCIE

【 摘 要 】

We report on the magnetic field dependence of half-integer quantized conductance plateaus (HQPs) in InAs quantum wires. We observe 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 the 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.

【 授权许可】

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