Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The flux dynamics behavior of the two competing high temperature
  superconducting phases in underdoped LaCuO4.06   In complex transition metal oxides (TMO) an arrested electronic phase
separation (PS) appears by tuning the system near a Lifshitz transition in
multiband Hubbard models. The PS in La2CuO4+y near insulator to metal
transition (IMT) is made of short range Charge Density Wave (CDW) order
inhomogeneity coexisting with quenched lattice disorder. While at high doping
y=0.1 percolation gives a single superconducting phase, near the IMT at y=0.06
two coexisting superconducting phases appear: the first one with a critical
temperature Tc1=16 K and the second one with Tc2=29K. It is known that the two
superconducting phases are characterized by two different space geometry
because of two different spatial distributions of both CDW order and dopants
self-organization. Here we show that these two phases show different flux
dynamic regimes using alternating current (AC) multi-harmonic susceptibility
experiments. This is a unique technique capable to investigate multi-phase
superconductors and characterize their transport properties in a percolative
scenario. Results point out that the low critical temperature phase is well
described by a bulk-like flux pinning with a 2D geometry while the phase with
higher critical temperature shows a barrier pinning mechanism providing direct
evidence of two different superconducting vortex dynamics in different complex
geometrical spaces.

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The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol