Spin echoes in disordered Hubbard models

  Tasneem Biadsy [1]  ,  Yoav Sagi [1]  ,  Netanel Lindner [1]  
[1] Physics Department, Technion – Israel Institute of Technology, Haifa, Israel.

We study spin-echo signals in disordered Hubbard models. We numerically show that the spin echo signal is characterized by a timescale which depends non-monotonically on disorder strength through the many-body localization transition. Our results yield a tool for detecting the transition which is based on short time evolution, making it efficient numerically and an attractive tool for experimental implementation