Summary of the Basic Free Electron Transport Characteristics in Donor Doped Silicon
Round 1
Reviewer 1 Report
In my opinion, the Einstein's generalized relation in the generally accepted form (16) does not need to be reformulated. The introduction of artificial new variables neff and mu_drift in this manuscript does not add significantly new physics, but only complicates the interpretation.
In particular, neff ~ n kT/Ef mu_drift ~ mu Ef/kT so mu_drift neff = mu n
This key point should be substantially clarified with a clear indication of novelty in theoretical and experimental terms.
Author Response
Please see the attachment.
Author Response File: 
Author Response.pdf
Reviewer 2 Report
The Author submitted a manuscript dealing with free electron transport in highly doped silicon. The Author already published a series of papers related to a similar topic; however, the submitted manuscript contains till now unpublished and new insight that deserves to be published. As a result, I shall have just minor comments that aim for improvement of manuscript quality and possible impact.
#1 fix errors - there are small mistakes in the text (probably due to LaTeX formating), such as "$" character in the abstract, as well as some typos in equations, such as missing bracket in Eq.19. Please proofread whole manuscript and fix errrors.
#2 discussion on effective mass - the Authors concluded that "the term all electrons in conduction band are free must be used with caution". Even though I agree with the Author, the effective mass tensor had been included to model the many-body problem (electron interaction with other electronics or atoms). As a result, appropriate discussion on the effective mass meaning and its relation to free electronics should be included to improve the Readers' understanding.
As a result, I would like to support the submitted manuscript, and the main of my comments is to improve the manuscript's quality.
Author Response
Please see the attachment.
Author Response File: Author Response.pdf
Round 2
Reviewer 1 Report
Eq.16(17) is the only consistent form of the Einstein relation which is valid regardless of the degree of degeneracy for all temperatures, in contrast to Eq. 13, which is failed at zero temperature.
