Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Doping dependence of the vortex glass and sublimation transitions in the
  high-$T_{c}$ superconductor La$_{2-x}$Sr$_{x}$CuO$_{4}$ as determined from
  macroscopic measurements   Magnetization and ac-susceptibility measurements are used to characterize the
mixed phase of the high-temperature cuprate superconductor
La$_{2-x}$Sr$_{x}$CuO$_{4}$ over a large range of doping (0.075 $\leq x\leq$
0.20). The first order vortex lattice phase transition line $H_{FOT}(T)$, the
upper critical field $H_{c2}(T)$ and the second peak $H_{sp}(T)$ have been
investigated up to high magnetic fields (8 Tesla applied perpendicular to the
$CuO_2$ planes). Our results reveal a strong doping dependence of the magnetic
phase diagram, which can mainly be explained by the increasing anisotropy with
underdoping. Within our interpretation, the first order vortex lattice phase
transition is due to the sublimation (rather than melting) of the vortex
lattice into a gas of pancake vortices, whereas the second peak is related to
the transition to a more disordered vortex glass state.

15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
19
The categories of this paper are: eess
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int