Prog. Theor. Phys. Vol. 75 No. 3 (1986) pp. 522-528
Metal-Insulator Transition of a One-Dimensional System of Interacting Electrons in a 2kF-Periodic Potential
Department of Physics, Tokyo Institute of Technology, Tokyo 152
(Received March 23, 1985)
An effect of mutual interaction is studied in a one-dimensional system of electrons with spins in a 2kF-periodic potential. The phase representation based on the boson method is used. It is shown that the system is metallic at T=0 in some regions of the g1H-g2 plane, where the g's are the coupling constants of the interaction between electrons. The metal-insulator boundary depends on the sign of g3⊥. A formulation of the self-consistent harmonic approximation with two kinds of variables is founded from a stand-point of the variational method.
DOI : 10.1143/PTP.75.522
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