Zener breakdown in Mott insulators and a quantum walk analysis

Date/Time: 11 May 2006 - ()

Speaker: Oka Takashi (the University of Tokyo)

Quantum transport of interacting electrons driven by strong electric fields are studied by mapping the Landau-Zener transition dynamics to a quantum walk on a semi-infinite one-dimensional lattice. Quantum interference induces a distribution localized around the ground state, and when the electric field is strengthened, a delocalization transition occurs describing breakdown of the original electron system.