Hello everyone
     I am using the transiesta to calculate the current. The object is flat 
graphene . When I only reduce the length of the structure  along Z-direction 
and other parameters don't chage, I find  that the currents alomost don't 
change . Would you please  tell me the reason ? I am looking forward your reply 
!
                     Zhendong  Guo
                     20th August  

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