拒绝信：
We have considered your manuscript and conclude that it is not suited
for Physical Review Letters.

We make no judgment on the correctness or technical aspects of your
work.  However, from our understanding of the paper's physics results,
context, and motivation, we conclude that your paper does not meet the
Physical Review Letters criteria of impact, innovation, and interest.
Our criteria require a clear justification for consideration of the
paper by PRL, rather than by a specialized journal. Your work appears
better suited for submittal to the latter.
[Please see our recent editorial
https://journals.aps.org/prl/edannounce/PhysRevLett.111.180001 (2013).]

In view of our assessment, we are not sending your manuscript out for
review.

Yours sincerely,

Reinhardt B. Schuhmann
Editor
Physical Review Letters
Email: prl@aps.org
https://journals.aps.org/prl/

IMPORTANT: Editorial "Review Changes"
https://journals.aps.org/prl/edannounce/PhysRevLett.111.180001

P.S. In addition, the manuscript is much (~40%) too long for a Letter.
A materials science journal might be appropriate，

人家已经写得很清楚了，就是你的文章创新不够，不适合该杂志。指出文章过长只是顺便。
换杂志吧，别纠结了。

是的

主编的意思是楼主文章不适合PRL，文章长度只是次要问题