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- W1654098960 abstract "(Dated: February 2, 2008)We perform density matrix renormalization group (DMRG) calculations extensively on one dimen-sional Mott and Peierls chains with explicit inclusion of the static bias to study the insulator-metaltransition in those systems. We find that the electric field induces a number of insulator-metaltransitions for finite size systems and at the thermodynamic limit, the insulating system breaksdown into a completely conducting state at a critical value of bias which depends strongly on theinsulating parameters. Our results indicate that the breakdown, in both the Peierls and Mott in-sulators, at thermodynamic limit, does not follow the Landau-Zener mechanism. Calculations onvarious size systems indicate that an increase in the system size decreases the threshold bias as wellas the charge gap at that bias, making the insulator-metal transition sharper in both cases.PACS number: 71.30.+h" @default.
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- W1654098960 date "2008-01-02" @default.
- W1654098960 modified "2023-10-18" @default.
- W1654098960 title "Effect of Electric Field on One-Dimensional Insulators: A DMRG study" @default.
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