Nonlinear Transport in One-Dimensional Mott Insulator in Strong Electric Fields

Details Nonlinear Transport in One-Dimensional Mott Insulator in Strong Electric Fields Nonlinear Transport in One-Dimensional Mott Insulator in Strong Electric Fields

2005-05-02

arxiv.org/abs/cond-mat/0505028v1

Physica B, Vol 359-361C, pp 759-761, (2005)

Physics

Condensed Matter

Strongly Correlated Electrons

3 pages, 3 figures, Proceedings of SCES'04 (Karlsruhe)

Scientific paper

10.1016/j.physb.2005.01.218

Time-dependent Schroedinger's equation is integrated for a one-dimensional strongly-correlated electron system driven by large electric fields. For larger electric fields, many-body Landau-Zener tunneling takes place at anti-crossings of the many-body energy levels. The nonlinear $I$-$V$ characteristics as well as the time dependence of the energy expectation value are obtained. The energy of the Mott insulator in electric fields shows a saturation, which suggests a dynamical localization in energy space of many-body wave functions.

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