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arXiv · 0807.3568

Spin-Incoherent Transport in Quantum Wires

W. K. Hew·K. J. Thomas·M. Pepper·I. Farrer·D. Anderson·G. A. C. Jones·D. A. Ritchie
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Abstract

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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W. K. Hew, K. J. Thomas, M. Pepper, I. Farrer, D. Anderson, G. A. C. Jones, D. A. Ritchie. 2008-07-22. Spin-Incoherent Transport in Quantum Wires. https://doi.org/10.1103/physrevlett.101.036801

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