Indication of the ferromagnetic instability in a dilute two-dimensional electron system.
The magnetic field B(c), 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 B(c) to vanish at a finite electron density suggests a ferromagnetic instability in this strongly correlated electron system.
Shashkin
A A
AA
Physics Department, Northeastern University, Boston, Massachusetts 02115, USA.
Kravchenko
S V
SV
Dolgopolov
V T
VT
Klapwijk
T M
TM