Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nano-patterning of cuprate superconductors by masked He$^+$ ion
  irradiation: 3-dimensional profiles of the local critical temperature   Irradiation of cuprate high-$T_c$ superconductors with light ions of moderate
energy creates point defects that lead to a reduction or full suppression of
the critical temperature. By shaping the ion flux with a stencil mask,
nanostructures for emerging superconducting electronics can be fabricated. The
3-dimensional shape of such defect landscapes is examined, based on
calculations of full collision cascades and atom displacements. A relation
between the calculated defect density and experimental values of the critical
temperature $T_c$ in thin YBa$_2$Cu$_3$O$_{7-\delta}$ films is etablished that
allows to determine the distribution of local $T_c$'s and its 3-dimensional
visualization. The results confirm that, using 75 keV He$^+$ ion irradiation
and a stencil mask, well-defined patterns of non-superconducting material in
the superconducting matrix can be produced with low blurring.

25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
2
The categories of this paper are: math
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org
11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph