Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Artificially Engineered Nanostrain in Iron Chalcogenide Superconductor
  Thin Film for Enhancing Supercurrent   Although nanoscale deformation, such as nanostrain in iron chalcogenide
(FeSexTe1-x, FST) thin films, has attracted attention owing to the enhancement
of general superconducting properties, including critical current density (Jc)
and critical transition temperature, its formation has proven to be an
extremely challenging and complex process thus far. Herein, we successfully
fabricated an epitaxial FST thin film with uniformly distributed nanostrain by
injection of a trace amount of CeO2 inside FST matrix using sequential pulsed
laser deposition. Using transmission electron microscopy and geometrical phase
analysis, we verified that a trace amount of CeO2 injection forms nanoscale
fine defects with a nanostrained region, which has a tensile strain (ezz ~
0.02) along the c-axis of the FST matrix. The nanostrained FST thin film
achieves a remarkable Jc of 3.5 MA/cm2 for a self-field at 6 K and a highly
enhanced Jc under the entire magnetic field with respect to a pristine FST thin
film.

20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph