QuantumATK Forum

QuantumATK => General Questions and Answers => Topic started by: kalewu on July 25, 2013, 23:10

Title: How to get the transmission spectrum as a function of electron energy E
Post by: kalewu on July 25, 2013, 23:10

Dear all,

Can you tell me how to get the transmission spectrum as a function of electron energy E as shown in Figure enclosed.

Thanks in advance.

Title: Re: How to get the transmission spectrum as a function of electron energy E
Post by: zh on July 26, 2013, 03:19

First, you have to perform a serial of transmission spectrum calculations of a device system at different bias voltage V_ds in the range shown in the figure [ e.g., V_ds  increases from -1.2 V to 1.2 V in an interval of 0.2 V].
Second, arrange and print out the data  in the following format for the transmission coefficient as functional of E at different V_ds:
 E[1]_1  V_ds [1]             transmission coefficient[1]_1
.......
 E[1]_n   V_ds [1]             transmission coefficient[1]_n    


 E[2]_1  V_ds [2]             transmission coefficient[2]_1
.......
 E[2]_n   V_ds [2]             transmission coefficient[2]_n    



 E[m]_1  V_ds [m]             transmission coefficient[m]_1
.......
 E[m]_n   V_ds [m]             transmission coefficient[m]_n    


Third, for the 3 dimensional data in the above format, you can use the matplotlib of python and the GNUPLOT to draw a contour plot for generating plot as you desired. For the details, you had better ask the author of the source of that figure.

Title: Re: How to get the transmission spectrum as a function of electron energy E
Post by: kalewu on July 26, 2013, 21:52

Thanks for your reply.