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Spin Effects in the Local Density of States of GaAs

P. König·T. Schmidt·R. J. Haug
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Abstract

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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P. König, T. Schmidt, R. J. Haug. 2000-04-11. Spin Effects in the Local Density of States of GaAs. https://doi.org/10.1209/epl%2Fi2001-00272-8

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