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VOLUME 68 (1998) | ISSUE 5 | PAGE 415
Lack of universal one-parameter scaling in the two-dimensional metallic regime
PACS: 71.30.+h, 72.15.Rn
We studied the two-dimensional metallic state in a number of Si-MOS structures with peak mobilities varying by a factor of 8.5. The data reveal density and disorder dependences of the major features of the scaling function, and thus lack of the universal one-parameter scaling over wide density range in the metallic regime.