Fano-Rashba effect in a quantum wire

Details Fano-Rashba effect in a quantum wire Fano-Rashba effect in a quantum wire

2006-08-17

arxiv.org/abs/cond-mat/0608392v2

Phys. Rev. B 74, 153313 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 3 figures

Scientific paper

10.1103/PhysRevB.74.153313

We predict the occurrence of Fano lineshapes in a semiconductor quantum wire with local spin-orbit (Rashba) coupling. We show that the Rashba interaction acts in a strictly one dimensional channel as an attractive impurity, leading to the formation of purely bound states. In a quasi-one dimensional system these bound states couple to the conduction ones through the Rashba intersubband mixing, giving rise to pronounced dips in the linear conductance plateaus. We give exact numerical results and propose an approximate model capturing the main ingredients of the effect.

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