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Spin-Splitting in a Two-Dimensional Electron System Determined by Nuclear Magnetic Relaxation and Magnetotransport Activation Measurements

Berg, A. ; Weiss, Dieter ; Klitzing, Klaus von ; Nötzel, R.


The spin splitting observed in two- dimensional electron systems at high magnetic fields is not only determined by the single-electron Zeeman energy but also by many-particle effects. Electron-electron interaction results in an enhanced g-factor which can be described by the exchange part of the Coulomb interaction. Nuclear spin lattice relaxation experiments analysing the Overhauser ...


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