Title The role of non-homogenous rashba coupling in dwell time and hartmann effect in monolayer graphene Type of Research Article Keywords The role of non-homogenous rashba coupling in dwell time and hartmann effect in monolayer graphene Abstract We have studied the tunneling time of the spinpolarized electron passing through the non-homogenous Rashba barrier in a graphene sheet. Results have shown that Hartmann effect is strongly depend on Rashba strength and other parameter of the system. Researchers kobra hasanirokh (First Researcher)، Arash Phirouznia (Second Researcher)، (Third Researcher)، Hakimeh Mohammadpour (Fourth Researcher)