Abstract

The galvanomagnetic properties of p-type inversion layers in germanium bicrystals were studied at helium temperatures T in high magnetic fields B up to 20 Tesla. A logarithmic correction of conductivity and Hall-coefficient together with a positive magneto-resistance ∞ In B in the parallel and transverse configuration suggests the existence of electron-electron interaction effects. The scaling of the magneto-resistance with B/T can be explained with Zeeman splitting of the energy levels.

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