Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Temperature Dependence of Magnetocrystalline Anisotropy in Itinerant
  Ferromagnets   We theoretically investigated magnetocrystalline anisotropy (MA) at a finite
temperature $T$ in ferromagnetic metals. Assuming a Rashba-type ferromagnet
with uniaxial MA, we defined the MA constants $K_\mathrm{u}(T)$ derived from
several different concepts. Our purpose was to examine the equality between
them and to confirm a power law between $K_\mathrm{u}(T)$ and magnetization
$M(T)$ in the form of $K_\mathrm{u}(T)/K_\mathrm{u}(0)=[M(T)/M(0)]^\alpha$. We
demonstrate that $\alpha$ equals 2 in the itinerant-electron limit and
increases with the localized feature of electrons passing through $\alpha=3$,
predicted for the single-ion MA in spin models.

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The categories of this paper are: hep-ph
22
The categories of this paper are: chao-dyn
26
The categories of this paper are: bayes-an
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an
8
The categories of this paper are: hep-ex
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ