1999/12/20 by Chi‐Te Liang, C. -T. Liang, M. Pepper +4 · 3 citations
Engineering · Physics and Astronomy · #Molecular Junctions and Nanostructures #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.61.9952
4 pages, 5 figures, latex to be published in Phys. Rev. B (15/3/2000)
arxiv created 1999/12/20 · openalex publication_date 2000/04/15 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We describe the transport properties of a 5\ensuremath-\ensuremathμm-long one-dimensional (1D) quantum wire. Reduction of conductance plateaus due to the introduction of weak disorder scattering is observed. In an in-plane magnetic field, we observe a spin splitting of the reduced conductance steps. Our experimental results provide evidence that the deviation from conductance quantization is very small for electrons with spin parallel and is about 1/3 for electrons with spin antiparallel. Moreover, in a high in-plane magnetic field, a spin-polarized 1D channel shows a plateaulike structure close to 0.3e2/h which strengthens with increasing temperature. It is suggested that these results arise from a combination of disorder and electron-electron interactions in a 1D electron gas.