Nonlinear Transport in One-Dimensional Mott Insulator in Strong Electric Fields
نویسندگان
چکیده
Time-dependent Schrödinger’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 anticrossings 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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تاریخ انتشار 2005