Bias-controlled spin polarization in quantum wires

T. M. Chen, A. C. Graham, M. Pepper, I. Farrer, D. A. Ritchie

研究成果: Article同行評審

43 引文 斯高帕斯(Scopus)

摘要

We demonstrate that a source-drain bias creates a fully spin-polarized current as the 0.25(2e2h) plateau in quantum wires even in zero magnetic field. When a source-drain bias lifts the momentum degeneracy, the dc measurements show that it is possible to achieve a unidirectional ferromagnetic order and this ordered spin array is destroyed once transport in both directions commences. The spin polarization of currents, between full spin polarization and partial spin polarization (or spin degeneracy), is thus simply controlled by source-drain bias and split-gate voltage, something of considerable value for spintronics.

原文English
文章編號032102
期刊Applied Physics Letters
93
發行號3
DOIs
出版狀態Published - 2008

All Science Journal Classification (ASJC) codes

  • 物理與天文學(雜項)

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