Dear All,<br />
<br />
    I have tried with a kwant code to see the transmission through barrier imposed by a qwr between the <br />
source and drain. The wire is constructed and its bands are formed successfully; but the plot of <br />
transmission through the constant barrier is not obtained. In the long run, I would like to use the <br />
standardised varying barrier potential and see the transport.<br />
Please help me overcome this difficulty so that I may proceed further.<br />
Kind regards.<br />
K.K.Ghosh <br />
 PS. code is attached herewith. <br />
<br>