Electron--Electron Scattering in Quantum Wires and it's Possible Suppression due to Spin Effects

Details Electron--Electron Scattering in Quantum Wires and it's Possible Suppression due to Spin Effects Electron--Electron Scattering in Quantum Wires and it's Possible Suppression due to Spin Effects

1993-06-17

arxiv.org/abs/cond-mat/9306038v1

Physics

Condensed Matter

11 pages, LaTeX and APS-RevteX 2, Rep.No. GF66,Figures from author, Physical Review Letters, scheduled for 7 June 1993

Scientific paper

10.1103/PhysRevLett.70.3643

A microscopic picture of electron-electron pair scattering in single mode quantum wires is introduced which includes electron spin. A new source of `excess' noise for hot carriers is presented. We show that zero magnetic field `spin' splitting in quantum wires can lead to a dramatic `spin'-subband dependence of electron--electron scattering, including the possibility of strong suppression. As a consequence extremely long electron coherence lengths and new spin-related phenomena are predicted. Since electron bands in III-V semiconductor quantum wires are in general spin-split in zero applied magnetic field, these new transport effects are of general importance.

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