Instability of subdiffusive spin dynamics in strongly disordered Hubbard chain

M. Sroda, P. Prelovsek, M. Mierzejewski

We study spin transport in a Hubbard chain with strong, random, on--site potential and with spin--dependent hopping integrals, $t_{\sigma }$. For the the SU(2) symmetric case, $t_{\uparrow…