1. Fano-Rashba effect in a quantum wire
- Author
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Llorenç Serra and David Sánchez
- Subjects
Coupling ,Physics ,Condensed Matter - Mesoscale and Nanoscale Physics ,Spin polarization ,Condensed matter physics ,Condensed Matter::Other ,Quantum wire ,Bound states ,FOS: Physical sciences ,Conductance ,Fano plane ,Condensed Matter::Mesoscopic Systems and Quantum Hall Effect ,Condensed Matter Physics ,Thermal conduction ,Electronic, Optical and Magnetic Materials ,Conduction bands ,Quantum mechanics ,Mesoscale and Nanoscale Physics (cond-mat.mes-hall) ,Bound state ,Semiconductor quantum wires ,Spin-orbit interactions ,Electron spin polarisation ,Rashba effect - Abstract
4 pages.-- PACS numbers: 73.63.Nm, 72.25.Dc, 71.70.Ej.-- Final full-text version of the paper available at: http://dx.doi.org/10.1103/PhysRevB.74.153313., We predict the occurrence of Fano line shapes 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 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., This work was supported by Grant No. FIS2005-02796 (MEC) and the "Ramón y Cajal" program.
- Published
- 2006
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