Müller, G. and Weiss, Dieter and Khaetskii, A. V. and Klitzing, Klaus von and Koch, S. and Nickel, H. and Schlapp, W. and Lösch, R.
Equilibration Length of Electrons in Spin Polarized Edge Channels.
Physical Review B 45 (7), pp. 3932-3935.
Other URL: http://prola.aps.org/abstract/PRB/v45/i7/p3932_1, http://prb.aps.org/
We investigate experimentally the "mean free path" of electrons injected selectively into the outer spin-polarized edge channel of the lowest Landau level. A simple model allows us to determine the characteristic length between two spin-flip scattering events directly from the measured resistance plateaus. Typical spin-flip equilibration lengths between 100 ìm and 1 mm are found. The size of the observed equilibration lengths is interpreted in terms of the spin-orbit interaction, which also leads to a local g-factor enhancement at the edge.