Spin-Incoherent Transport in Quantum Wires

Details Spin-Incoherent Transport in Quantum Wires Spin-Incoherent Transport in Quantum Wires

2008-07-22

arxiv.org/abs/0807.3568v1

Phys. Rev. Lett. 101 (2008) 036801

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 6 figures

Scientific paper

10.1103/PhysRevLett.101.036801

When a quantum wire is weakly confined, a conductance plateau appears at e^2/h with decreasing carrier density in zero magnetic field accompanied by a gradual suppression of the 2e^2/h plateau. Applying an in-plane magnetic field B|| does not alter the value of this quantization; however, the e^2/h plateau weakens with increasing B|| up to 9 T, and then strengthens on further increasing B||, which also restores the 2e^2/h plateau. Our results are consistent with spin-incoherent transport in a one-dimensional wire.

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