Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Crystal truncation rods from miscut surfaces   Crystal truncation rods are used to study surface and interface structure.
Since real surfaces are always somewhat miscut from a low index plane, it is
important to study the effect of miscut on crystal truncation rods. We develop
a model that describes the truncation rod scattering from miscut surfaces that
have steps and terraces. We show that non-uniform terrace widths and jagged
step edges are both forms of roughness that decrease the intensity of the rods.
Non-uniform terrace widths also result in a broad peak that overlaps the rods.
We use our model to characterize the terrace width distribution and step edge
jaggedness on three SrTiO$_3$ (001) samples, showing excellent agreement
between the model and the data, confirmed by atomic force micrographs of the
surface morphology. We expect our description of terrace roughness will apply
to many surfaces, even those without obvious terracing.

6
The categories of this paper are: astro-ph
25
The categories of this paper are: patt-sol
31
The categories of this paper are: ao-sci
7
The categories of this paper are: hep-th
20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio