Central role of exchange-correlation hole in the 2D metal-insulator

Details Central role of exchange-correlation hole in the 2D metal-insulator Central role of exchange-correlation hole in the 2D metal-insulator

2000-01-31

arxiv.org/abs/cond-mat/0001435v1

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages in ReVTeX, 2 encapsulated postscript figures

Scientific paper

We show that the metal to insulator transition, whether generated by
decreasing the electron density or by increasing the spin alignment, is
determined by a universal functional form of the two-electron correlation
function g(r). This result provides direct evidence of the central role of the
Coulomb repulsion and exchange in driving the metal-insulator transition.

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