How to answer the comment

[Roc]

Dear all,
      I give the DOSs of the central sample under a biase. A reviewer asks the question:  I don't know how to define here's DOS and calculate it because the two-probe system lies in a nonequilibrium state under a finite bias, making the chemical potential deferent on the different positions of the central sample from the L to R electrode. The authors should also explain it.
How to answer the question? Thanks.

[Jess Wellendorff]

Did you do a Device Density of States for the full device under bias, or an ordinary DOS for the central region only? If the latter, I think the reviewer may have a good case.

The DDOS method is documented here: http://www.quantumwise.com/documents/manuals/latest/ReferenceManual/index.html/ref.devicedensityofstates.html
See attached also PNG, where the left and right electrode Fermi levels indicate that the device is biased.

[Roc]

Thank you. It is the Device Density of States for the full device under bias.

[Jess Wellendorff]

OK, if you used the DDOS in the paper, and if the left and right Fermi levels are clearly indicated in the paper, I think you should simply explain to the editor how the DDOS is computed from the spectral density matrix, see the notes in http://www.quantumwise.com/documents/manuals/latest/ReferenceManual/index.html/ref.devicedensityofstates.html.