Indication of the ferromagnetic instability in a dilute two-dimensional electron system
Abstract
The magnetic field Bc, in which the electrons become fully spin-polarized, is found to be proportional to the deviation of the electron density from the zero-field metal-insulator transition in a two-dimensional electron system in silicon. The tendency of Bc to vanish at a finite electron density suggests a ferromagnetic instability in this strongly correlated electron system.
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