Spin Effects in the Local Density of States of GaAs

Details Spin Effects in the Local Density of States of GaAs Spin Effects in the Local Density of States of GaAs

2000-04-11

arxiv.org/abs/cond-mat/0004165v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages and 5 figures

Scientific paper

10.1209/epl/i2001-00272-8

We present spin-resolved measurements of the local density of states in Si doped GaAs. Both spin components exhibit strong mesoscopic fluctuations. In the magnetic quantum limit, the main features of the spin-up and spin-down components of the local density of states are found to be identical apart from Zeeman splitting. Based on this observation, we introduce a mesoscopic method to measure the $g$-factor in a material where macroscopic methods are severely restricted by disorder. Differences between the spin-up and spin-down components are discussed in terms of spin relaxation due to spin-orbit coupling.

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