Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Temperature dependence of the upper critical field of type-II
  superconductors from isothermal magnetization data. Application to high
  temperature superconductors   Using the Ginzburg-Landau theory in very general terms, we develop a simple
scaling procedure which allows to establish the temperature dependence of the
upper critical field and the value of the superconducting critical temperature
Tc of type-II superconductors from measurements of the reversible isothermal
magnetization. An analysis of existing experimental data shows that the
normalized dependencies the upper critical field on T/Tc are practically
identical for all families of high temperature superconductors at all
temperatures for which the magnetization data are available.

29
The categories of this paper are: funct-an
2
The categories of this paper are: math
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex