Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Application of the M\"ossbauer spectroscopy to study harmonically
  modulated electronic structures: case study of charge- and spin-density waves
  in Cr and its alloys   Relevance of the M\"ossbauer spectroscopy in the study of harmonically
modulated electronic structures i.e. spin-density waves (SDWs) and
charge-density waves (CDWs) is presented and discussed. First, the effect of
various parameters pertinent to the SDWs and CDWs is outlined on simulated
119Sn spectra and distributions of the hyperfine field and the isomer shift.
Next, various examples of the 119Sn spectra measured on single-crystals and
polycrystalline samples of Cr and Cr-V are reviewed.

37
The categories of this paper are: supr-con
2
The categories of this paper are: math
6
The categories of this paper are: astro-ph
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga