Strong correlation induced charge localization in antiferromagnets

• DOI: 10.1038/srep02586
• Publication Date: 2013-09-04T09:03:58Z
• Authors: Zheng Zhu; Hong-Chen Jiang; Yang Qi; Chushun Tian; Zheng-Yu Weng
• Keywords: Mott insulator; Strongly correlated material; Anderson Localization; Weak localization

The fate of a hole injected in an antiferromagnet is outstanding issue strongly correlated physics. It provides important insights into doped Mott insulators closely related to high-temperature superconductivity. Here, we report systematic numerical study t-J ladder systems based on the density matrix renormalization group. reveals surprising result for single hole's motion otherwise well-understood undoped system. Specifically, find that common belief quasiparticle picture invalidated by self-localization hole. In contrast Anderson localization caused disorders, charge discovered here entirely new phenomenon purely strong correlation origin. results from destructive quantum interference novel signs picked up hole, and since same effect generic feature physics, our findings unveil paradigm which may go beyond