Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nature of Correlated Motion of Electrons in the Parent Cobaltate
  Superconductors   Recently discovered class of cobaltate superconductors (Na0.3CoO2.nH2O) is a
novel realization of interacting quantum electron systems in a triangular
network with low-energy degrees of freedom. We employ angle-resolved
photoemission spectroscopy to uncover the nature of microscopic electron motion
in the parent superconductors for the first time. Results reveal a large
hole-like Fermi surface (consistent with Luttinger theorem) generated by the
crossing of super-heavy quasiparticles. The measured quasiparticle parameters
collectively suggest a two orders of magnitude departure from the conventional
Bardeen-Cooper-Schrieffer electron dynamics paradigm and unveils cobaltates as
a rather hidden class of relatively high temperature superconductors.

8
The categories of this paper are: hep-ex
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The categories of this paper are: nlin
29
The categories of this paper are: funct-an
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
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The categories of this paper are: bayes-an
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The categories of this paper are: acc-phys
19
The categories of this paper are: eess
11
The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
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The categories of this paper are: quant-ph
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The categories of this paper are: ao-sci
32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th